This kind of black vs white aphorisms is a natural outcome of the "public square" dogma most Nostr apps are built on. 

A public square always lead to fights, engagement farming, ridiculously un-nuanced takes, self-reinforcing iNfLuEnCoR feedback loops, ... and ultimately the centralization and compliance it so ostentatiously claims to avoid.   

Interoperable niches is a more sensible path. 

On Nostr: We can have our separate spaces (relays) to discuss and target our publications **and ** have public, organic discovery/reach built in. 
Around Nostr: We can have our separate protocols (git, pkarr, meshtastic, ...) as long as they remain interoprable with each other's basic premises.