well because it makes it easier for modpack creators to find mods that achieve a specific thing or two
or to just be able to see which mod adds content and which one does not
and by that definition filter out mods to reduce system load or size
You'll probably see the demand for such thing once I upload it to curseforge ¯\_(ツ)_/¯
thank you about the concern with multiple directories but I am talking about modpacks and that I can at least sort out library mods or coremods into their own folder (which I happily did in the minecraft verion folder)
Thank you for providing me with the details I need anyway though!
I'll consider this thread closed tho I still may have questions so will keep it open!