i think this would be a senseful decision because skelekat said that this would make any% eventually being shorter than 30 minutes. So i'd say both categories should be there because without moonstone duplication you actually play through the game but with the duplication you maybe only collect the plants and then the moonstones and you're pretty much done, so you would skip the entire spirit and yorbel collecting part which is the longest part of the run.

Also collecting the plants, yorbels, spirit and moonstones is the intended way of completing the game while moonstone duplication isn't, so the classical any% can be seen as a kind of "Any% Glitchless" or at least "Any% No Major Skips" even if there are glitches and also major skips (for example sun temple early) of course. Also, and even if it doesn't seem to be logical i would still allow strats like sun temple early for Any% No Moonstone Duplication, it's just my opinion, so like, that you just collect the 9 plants, 100 yorbels, lok's spirit and the 3 moonstones, no matter how (except for duplicating of course).

I think this would be a good idea. Wouldn't call it glitchless though because of item storage/throw hovering, but any% no major skips sounds good.