That’s one of the advantages with p2p-ish networks, if you’re on the same network, devices can often disover each other and communicate directly, bypassing the bottleneck of an internet connection like traditional cloud services have ^.

Meta in particular has a specific record of social manipulation, which is why I think defederating them specifically is so important. Even if we collectively have mixed feelings on corporate instances in general, social media companies, especially those like Facebook, have a specific and direct record of manipulating people and the population nya. Facebook/Meta in particular, is probably the worst of any of them.