its to prevent the run from being too slow and boring to play

Bunnyhopping is hard to define what counts as it, as it simply requires only jumping to build up speed, so there's not much you can do about easily defining the exploit, outside of requiring every run to not go above a special speed threshold that can only be checked with Demos or Console Commands, which would make the category even more niche, as some don't bother with Demos/Commands at lower skill levels. As for other glitches, most of them are just for skipping slow sections with barely any mechanical effort, or otherwise classify as a minor exploit.