honestly, comparing the fediverse (or mastodon in particular, as people love to do) to twitter is pretty useless.
It's like comparing apples to bananas.
Or comparing GPLv3 to EULA (which is often enough done in the same way)
They are always two very different things, that don't share more than "being fruits ('social' media networks, software licenses)"
It's pretty pointless to do so, but people love doing it for the contrast, but in the end it is pretty pointless.