@feditips@mstdn.social Every instance is allowed to do that dude. I can make a mobile app that exclusively interfaces with my CalcKey instance, and expose the features I deem appropriate. There's no governing body saying how the Fediverse has to function, and if the Fediverse thrives like centralized email providers and SMTP. If that's the way the ecosystem goes, then so be it, that's the freedom of this ecosystem.