what you're saying, if I understand correctly, is that self-hosting this is trivial then
so does that mean I could run my own local instance and never get it taken down since traffic would be negligible? why do people opt to host these for others over teaching how to run your own for example?
Every individual running their own instance would be the equivalent of every individual having their own Twitter account, which defeats the purpose.
Yes. It comes encouraged.
> so does that mean I could run my own local instance and never get it taken down since traffic would be negligible?
Yes, unless the other end forbids it and really cares about controlling clients. If they do and manage to detect that you are using alternative client they could block based on that. In times where that happens and there are client devs who care, it becomes a cat-and-mouse.