I regularly do foss dev work and designed a couple of foss apps.
From my understanding, it should be no problem to have a basic fedi instance running on your phone. The ins and outs of the different fedi softwares dictate that the phone be mostly available due to the “back off” mechanism of the services (doubling the silence between every unsuccesfull attempt).
But all in all, this would get rid of the need for centralized servers AND the need for using different protocols.
Of course, we would just run the database and the api, not really the frontend all the time and connect to it by the usual app.
Has anyone done this yet? It makes any mass action by censors impossible afaik.
yes, phones have ip addresses, but the cell phone network is not going to open their firewall for your phone to receive incoming connections, in much the same way as the cgnat in the blurb you quoted there works. if your internet plan does that, hosting a server is pretty much impossible.