@sun It isn't that the Fediverse is at all complicated or hard to understand; it is that it is different than what they've already been using. They'd rather not invest the effort in understanding it when they can just move to Bluesky and use it as a Twitter clone. (Bluesky has its own complications and it isn't even truly federated, but one can easily ignore all of those things and just pretend they're on Twitter.)

And if one isn't interested in federation and decentralization, why should they bother learning about it if they don't have to? Go to Bluesky or Threads (as long as they don't turn on federation) and have "Twitter without the Nazis" but without all the botheration (examples: #blockwars / #fediblock, instance drama, policy differences between instances) that Mastodon and the Fediverse bring with them.