One concern I have with the fediverse are a few "fediverse hosting services" which are popping up (it's not really surprising, services like this exist for all kinds of things, such as blogs).

These create points of control, and from the looks of them, quite a few appear to be bad faith actors who want to wear a little golden crown and control things.

A neutral host is better because they're not really interested in what goes on on the fediverse (the so-called fediverse drama), only whether you pay the bill.