I have actually never flown on a narrow body plane that had charging ports, so I wouldnt say “most flights”

https://purelymail.com/

That’s racist!

This will probably take care of itself with time. Not having any “official” ones dictated by some central authority is kind of the whole idea of the fediverse.

https://github.com/dessalines/jerboa

I think it depends heavily on how much storage you’re allocating, if you allow uploading media that is. From what I’ve understood most of the bottlenecks are in DB operations so CPU and memory definately play a role.