Okay got it no worries. At least now I know that there shouldn't be anything wrong with my setup process, I'll just delete the Kasume folder too in this case.I deleted that entire kasume folder when I detected dupes. It's from CMU 2023 repack. At that time maybe the modpack didn't have these hairs. I added them later so there's no way I would have known about them when I wrote the guide.
Thanks for the help!