I’d argue perhaps the opposite: if you want full moderation and admin freedom, running it on your own instance is the only way to do it.
If you run it on someone else’s server, you’re subject to someone else’s rules and whims.
Granted, I have zero reason to think the admins of any of those listed instances would do anything objectionable, but that’s today: who knows what happens six months or a year or two years from now.
Though, as soon as you start adding stuff to your personal instance, you’re biting off more maintenance and babysitting since you assumably want your stuff to be up 100% of the time to serve your communities, so that’s certainly something to consider.
The best 1 month anniversary is doing the same thing when you first met.