[ignaloidas]

Out of the things you listed, moderation is for sure one that gets harder to deal with the more centralized the network becomes. All large instances have comparatively bad moderation, and that's a fairly well known fact among the older users.

For what it's worth, moderation is the best thing about fediverse. So many communities that have grown up there over the years couldn't have done it without decentralized moderation.

And it's not like there hasn't been a "some kind of major and controversial moderation defederation event" - there have been several. There are several collections of instances that are fairly closed off from the wider network. And honestly, that's fine. If some people get tired of others shit, they should be able to close themselves off from them.

The simple fact that a single administrator can moderate an instance of about 100 active people in their free time is what allows the moderation in fediverse to scale. Adding more people makes it a job, and from what I've read from professional moderators of social networks, that job is not a nice one.