Disney and the rest of their companies are in the legal right, sure. I stand by my previous post
What you're basically saying is that companies aren't allowed to actually protect their intellectual property. Outrage mobs will prevent it. And if they "felt threatened" by this lousy film, then they could have just taken it down. This whole thing is literally just him getting angry because they stuck ads at the beginning of it. That's all. He wasn't being hurt. Anyone could still watch the thing. No legal actions were being threatened.
Weirdly, I think it would have been less a story if they'd gone nuclear on him and just took the whole thing down.
The world is a strange backwards place these days.