

It is running natively. In comparison to, for example, emulators that emulate old gaming consoles completely, Termux emulates only an input device, so basically a keyboard and a display, but the actual applications are Linux and run on Androids Linux Kernel natively. There is no emulation or virtualization happening.
Aren’t Mastodon instances maintained by volunteers in their spare time? I can’t imagine how they manage to continue moderating it once there are ten thousand or millions of users on it. At least the moderators on Twitter were paid. It was their job. I think people massively underestimate how much work this is.