It's different insofar as we mostly agree on a few key premises here, which make me more amenable to long form discussion. Few here take supernatural causation seriously, we can (sometimes) agree that there's something wrong with fallacious arguments. Evidence matters. Getting at the truth of the matter, and promoting the tools we need to do that is kind of the point of a skeptic's forum like this one. It's also different insofar as it's largely invisible to the outside world. Nobody really cares about this aging community using archaic technology on an obscure corner of the internet is talking about, so there are fewer interlopers. I mean, in practice we're not much better here than the rest of the world when we venture beyond fish-in-a-barrel stuff like homeopathy or psychics, but at least we are pretty good with that stuff.
I never really saw Twitter/X, or now Bluesky as being about that. It's something more like a newsfeed, with a little bit of community thrown in. I don't care to argue with anyone there. And I think the idea that it ought to be a no-holds-barred debate in arena where most people present exceedingly low-quality arguments is exactly why Twitter/X is losing users, and Bluesky is exploding. Of course, there are a lot of other reasons why it's exploding, but that's the key misunderstanding that I think a lot of people have.