>scraping content is mostly legal, redistributing content is not.

So, I take it some Twitter users took an issue with their tweets being redistributed by another platform and sued XCancel?

Because surely you're not claiming that Twitter has any ownership of what gets posted on that platform, are you?

>if you started doing the same to, say, instagram content both meta and individual creators would sue you as well.

By that logic, Meta could sue me for posting my photos on other platforms.

Meta doesn't have a case here, and neither does Twitter, but something tells me Twitter is involved in this nevertheless.