> In P2P if you ARE the server. Its the same thing.

Only in a very reductive sense. The accessibility requirements alone for nostr relays vs a P2P node are huge difference, and your phone does *not* need to remain online constantly to participate in Freenet (the only one of the bunch I'm willing to speak authoritatively about). The network stores the data, not just relays it.

I agree freenet is probably too heavy to run on a phone but you can run a gateway, problem solved, and you have far more flexibility for how you run such a gateway, it can be totally private to you, very different from running a relay.