So a counterculture can use the mainstream platforms, but they choose to do so only as a microphone, not as a gathering place.
Edit: That said, one of the members of a related group just (as in, after I wrote this but before editing was made unavailable) got banned from Twitter, so maybe they can't actually use the platform as a microphone for very long. It looks like the law is getting involved, specifically related to the Verkada hack.