I totally understand your frustration. Trying to understand the logic there is impossible because it’s not based on logic at all. I think any reasonable person would agree that Daniil made a booboo, and it’s ok if Jojo called it out. No one died or anything, in reality not really that huge of a deal.
It’s funny how the thread has led to talk about legality even though I’m sure almost no one cares about the minutiae of copyright law. But it’s gone there because no one wants to acknowledge the real elephant in the room, which is that it’s really just extreme unhealthy fanaticism, leading to people doing mental gymnastics and twisting reality because the objects of their fanaticism can’t do anything wrong. I mean calling Jojo a villain, and saying Alina Zagitiva should sue is really really out of order, yet people totally thumbs up these comments like it’s totally ok because this type of extremism is accepted. That tends to be the state of things here, and no amount of logic can seem to fight this fanatical thinking.