this is just false.

Purple community will literally be a relay and we will build ui support for this so that anyone else can run a community this way.

In the purple case it will be public read and private write, but making relays first class in app (only show posts from a single relay when you click on it) is the most important thing to make this work.

Some people try to do this already but treating relays like a commodity and spreading the same note everywhere is killing this use case. 

 this is the future of nostr. 

broadcasting all notes to all relays makes sense as the first step. specialization only increases decentralization and reliability.