The other side of that is that companies or even individual journalists could just spin up their own instance and not allow outsiders to sign up.

I know there are a lot of people in the various privacy and piracy boards who act like the world is against them and brag about how they only log in to social media through tor and blah blah blah.

They... are basically larping. Nobody actually cares about them.

Whereas, a journalist who investigates labor issues or something that is ACTUALLY illegal? There are plenty of stories about what happens when the companies that actually "own" the data suddenly want to use it to find you. This is when your life becomes having a dedicated laptop that is never on in the same physical location as any of your other devices, needing to change cars, and literally going into hiding.

Also... maybe look up Jordan "friendlyjordies" Shanks-Markovina. His story is not at all unique. He just happens to be brave/dumb enough to talk about it online (and have collaborators who use it for Content)

The worst the various pro-piracy instances will face is a few sacrificial lambs getting put into indentured servitude by a company. The "pro-journalism" instances will get abducted and/or firebombed.

This is why one of the first things musk did was talk about how he wants to work with China (I think?). He instantly made it clear that twitter would no longer even pretend to give a shit about the privacy of its users. Because you should never have sent anything sensitive over a DM. But coordinating a more secure form of communication was very much a thing. Same with "having time" to... flee a country before the dictator you exposed comes for you.