It's not just the centralization, but that it's so corporate and closed off. This was even true before it was bought and renamed to X.
To be fair though, if they were only on Twitter but they were constantly posting about repurposing subsidized corporate tech to run full open source code, and the open source cryptography code they're writing, I'd say they're legit. Maybe they're on Fedi, private Matrix groups, the cortex implant forums and other places. Or maybe they're on nostr under another nym?
I say if you're going to judge them, do so based more on the content of their posts than where they post it.