You're not wrong that people will tie their sense of self up with internet celebrities and refrain from criticizing them accordingly but that doesn't mean that instincts for someone whom you have ever met justify showing up to vindicate yourself in a thread like this. If you were a victim in a position like this, do you think seeing people say "oh I always knew he was bad" makes you feel any better for putting your faith in someone like this? Do you think that Linus, if he were innocent (not saying he is or isn't I'm using it to illustrate a hypothetical) wants to see people saying they always thought he was a horrible person if this all shakes out in a way that absolves him of Madison's abuse with LMG? Who does it benefit to say that you always knew someone was bad?
Trust your instincts, absolutely. You don't need to engage with someone if you don't think they're good people. But saying "I KNEW" implies you had perfect information, it implies that you're smarter than dozens of other people about how a situation like this would eventually resolve. That doesn't benefit anybody, it's better and more productive to go to the victims, support them, listen to them, and let them speak their piece because ultimately situations like this have to be about them, not about you and how you got a bad vibe from someone on a YouTube video or a Livestream or a few tweets.