Eh I doubt it as usually mining rigs have as many GPUs as possible per PC. Part of me wants to say this is for some random internet cafe but idk.
Let's spread out lemmys userbase so that a single instance can't take out large chunks of the network
Yeah mastodon has some instance choosers that choose an instance based on preferences and other factors.
Well their privacy policy stops to matter when you firewall off the camera to only talk to local network/your server.
Aegis, simple, Foss, and has all the features I'd want (ex: biometrics).