This is all by design in a decentralized, permissionless infrastructure. The github nips repo works for a circle of developers, of which many take influence, and would like to contribute but doing so on a permissioned platform is getting annoying.

 There is nothing wrong using it as the defacto repository or a model for "The Nostr" local to everyone that wants to take influence. The problem is that nostr is too good and using any other system is starting to get painful (damn you developers! ✊). 

Just let the ideas compete with other specs. Make a whitelist relay where you and others curate and incubate the ideas. Others could fork on their own relays, but no one needs to listen - unless it actually makes sense for the client.

Ultimately, its a public announcement of "i'm using this spec" and you don't need to leave nostr to be part of the "official" conversation.