1. Bojack is not responsible for Sarah Lynn’s death. Yes, he could have prevented it by being a better person but he did not directly cause it by being a piece of shit. He did have major involvement and cause but Sarah Lynn’s tragic tale would have ended that way with or without him. She says so herself in the episode where she is first introduced.

2.Vincent is actually 2 or 3 kids in a trenchcoat and not some weird Bojack vision or whatever yall think. It’s a joke.