Whoopsy, born evil. Haha, sorry sport!

Absolutely sick of it and genuinely disgusted by its use in Onestar's Confession to make Onestar feel better about his garbage actions.

It CAN be a neat set up, however it's use in Onestar's Confession left a bad taste in my mouth completely.

The latter. It disgusted me reading that sh*t in OC.

Since there've only been overall two characters in this series who got ouright stated to "be born evil", which were Brokenstar and Darktail (although technically Tigerstar too considering that StarClan told Pinestar to kill Tigerkit since he would "destroy the forest" and Goosefeather told Bluefur/star this as well), it hasn't happened that often but enough times for me to be sick of it, for sure. The concept/belief of people or, in this case characters, to be born evil is not something I'm a fan of either because it's usually just not the case and feels like a cop-out in terms of the fictional aspect in writing such characterization instead of giving actual reasons for a character to be evil, in my opinion.

That does't change the fact that Goosefeather somehow knew exactly what Pinestar dreamt about and confronted him about it after he woke up. Seeing as Goosefeather himself had such a strong connection to StarClan that he was outright plagued by constantly receiving visions/prophecies from them in his later years, means there was at least some truth to the fact that StarClan had something to do with Pinestar's dream. Even if it was not a direct vision for him from them.

Also, while it is certainly true that Doestar told Pinestar that his son would have to be raised right to overcome the shadow of his destiny of having the power to destroy ThunderClan, this doesn't change yet the other fact either of Tigerkit/star thus indeed having the potential for turning out evil from birth. And StarClan knew that from the beginning. Yes, he might've not turned out the way he did if Pinestar just hadn't abandoned him and had been there to raise his son and see him grow up. But that's not what ended up happening since Pinestar interpreted that warning from StarClan to be the so called final push for him to take a different path by then turning his back on ThunderClan and becoming a kittypet instead.

But Goosefeather still somehow knew what Pinestar's dream had been about. And since he's no Jayfeather who can just walk in the dreams of other cats whenever he wants, it means there had to indeed be some involvment from StarClan directly, even if it was not a direct vision. How else would he have known about it? Also, Goosefeather never outright interpreted the dream Pinestar had. He at first indeed asked Pinestar if had a bad dream but then not long afterwards suggested for him to listen to StarClan. Which thus implied StarClan had something to do with this dream and also that he himself knew about what they had told Pinestar since he later on repeated the sentiment of Tigerkit/star being meant to have died instead of staying alive to Bluefur/star. I do agree that Goosefeather was not exactly a reliable source of sign interpretation during his later years but that seems to have been the point of his characterization. Seeing as his niece also doubted his words but his prophecy from StarClan about her turned out to be true (which he revealed long after the WindClan disaster but before Tigerstar was born).

Look, my point was not that Tigerstar had the potential to be evil (because you're definitely right that everyone has that potential) but rather that StarClan told Pinestar this for a reason in regards to his son. Otherwise, what stops them from marching up to every leader who is a parent and just telling them their kit could be evil if it wasn't for an actual important reason (or in Pinestar's case moreso a warning)? I agree that Pinestar staying and helping to raise Tigerstar instead of abandoning him could have saved him from his villainous fate but that is getting into What-if scenarios since there were multiple factors in Tigerstar's life who later on affected him. Not just his absent father. There was his bloodthirsty mentor Thistleclaw who encouraged his more violent tendencies and Mapleshade who was revealed to have also whispered into his ears about seizing power (a revelation which I still hate). Blaming Tigerkit/star becoming evil soely on Pinestar just doesn't seem fair, in my opinion. He certainly played a part in it but was not the only one responsible for the eventual outcome.

Goosefeather can also see the future to some extent. He doesn't need Starclan involvement in a dream to know that Pinestar is worried about what Starclan is telling him and will try to leave the clan in the immediate future. It's possible the dream was legit Starclan messaging, but as presented in the story, it's a lot less clearcut than Doestar's message. And as for Goosefeather's opinion on Bluestar, I'd argue that's actually another example where he interpreted badly. We know Sunstar wouldn't have picked Thistleclaw anyway, so all his vision really did was doom Mosskit and cause Bluestar incredible emotional pain in her ambition. He was correct only to a certain degree there. 

Doestar warned Pinestar because Tigerkit would be powerful, that much is said outright. There's a difference between someone like, say, Brokenstar going bad and Tigerstar going bad. Brokenstar was a tragedy for Shadowclan, but ultimately he was a loser who was out of his depth just trying to govern Shadowclan and was never a serious threat to all the clans. Tigerstar, on the other hand, was on the verge of destroying all the clans. The consequences for a kit going bad become much more extreme when they have that much more wit, strength, and social connections, which Tigerkit was lucky enough to be born with. Those same traits though could also make him a great leader, and Doestar says as much in her message. Which is really what it's all about, that Tigerkit has great potential for either extreme evil or great good, and I'd say that certainly merits a message without necessarily judging that he will be evil.

Yes, the whole thing isn't entirely Pinestar's fault, but he was the leader of Thunderclan at the time and Tigerkit's father, and his departure set the stage for things to go downhill. There's at least some share of blame to be had for being essentially the inciting incident. Anyway, even if he lacked in fault compared to Thistleclaw, the point would stand that Tigerkit became the way he was due to his environment.