What's the advantage of being distributed?
By choosing your hoster, you delegate content moderation capabilities for your feed to them. If you don't agree with their policies, you can switch to a different hoster without having to leave the ecosystem.
I am not sure to which degree this is practiced/convenient in Mastodon currently, but its distributed nature enables this as an elegant solution to the content moderation problem IMO
But you lose all of your followers, so in practice this is never done. You’re stuck with the censorship imposed by your chosen instance operator. Most are more strict and less transparent than Twitter.
https://blog.joinmastodon.org/2019/06/how-to-migrate-from-on...