Mastodon is a refreshingly nice place. It feels like the beginning of the Internet, when the norm was that people are nice to one another.
It would be interesting to find out why it is so.
Unfortunately, I am afraid that the reason is simply that the reason is simply that the place is still relatively new so that a social hierarchy between members has not been established yet.
Unfortunately, it is just a thing humans do. If you wish death to hierarchy, you wish death to the human race.
No, some people may find it a good idea, but I think it would be a lonely place, just with roaches and rats... Even if rats are actually pretty nice as pets.