Sure if you are tied to only the most used NIP, then it makes sense to keep kind 1 there. But if you are also seeing a lot of other applications being fully developed that don't even think about a kind1 post, that is evidence that there is more to it and that the kind 1focus is just getting in the way.
I do think both are true: We are mostly focused on kind1s right now and also we have apps that kind 1 doesn't even make any sense.