Hmmm, I don't think I know enough to say. He was definitely a bit of a cad, which is unbecoming for anyone. But what gets people like him "cancelled" is when their targets are people they have power over. Probably the best example that I'm familiar with (because I was a fan of his) is Charlie Rose. Everyone knew he was a womanizer, but what caught up to him was the way he targeted women who worked for him. I don't know enough about Feynman's behavior to say if he was doing that. None of the stories I know of involve students or employees of his, but I also wouldn't be shocked if stories like that are out there.