It’s not just the difficulty, it’s that the fediverse runs on reputation.
If you get a reputation for being an instance that has offensive/illegal content, you’ll get defederated and your users will get a materially worse experience than the rest of the instances that are federating with each other - and it really only takes one or two things to get that reputation.
sh.itjust.works is a prime example: it didn’t take an awful lot to get them down the defederation road, and I suspect most admins would want to maintain their reputation and an easy way to do it (until we get like… moderation tools) is to just gatekeep what communities show up on your instance.
Personally, the word I’d use for it is ‘boring’.
Loved ME and did a playthrough with the Legendary re-release, but when I hit Andromeda, I got to the planet and went ‘You know, I don’t care about ANY of these people, what we’re doing, and I’m not going to drive around for 30 more hours of this’ and just kinda… stopped playing.