Good point. In #Bitcoin, the protocol is practically frozen because any incompatible change (hard fork) splits the network, which destroys value. The culture is rabidly hostile to protocol changes.

In #Nostr, the culture is much more trigger-happy with innovations, maybe too much so. You could argue that the stakes are much lower, the network is still small, and partial breakage of notes has much less impact than incompatibility on a monetary base layer.

However, as it stands, Nostr is effectively not a protocol.