I agree, that's why I want to get rid of them.

The way they exist now gives too many wrong impressions. People see a central registry of NIPs and think that is "the Nostr protocol", when in fact many of those NIPs are not used already (or most people agree they shouldn't be used) and we can't touch anything on the list because it is a very serious list. At the same time there are many kinds being actively used with multiple implementations that aren't merged on the repo, and, most importantly, the way in which each kind is or should be used is not in the repo either.

Once the "official NIPs" aren't a thing anymore someone (or actually many people) can create independent registries that track implementations or do the job the current NIPs repo is doing, but much better and in a more fluid, opinionated way.