Well, to throw something slightly off into the discussion:
SE and people from the "clipping is bad"-band can argue as much as they want, that chest-long-hair is good / difficult enough, but...
Considering one specific hairstyle (which they should have added when the collab with FFXIII was a thing), I say the devs aren't even trying to expand their limits.
When the longest strands of an hairstyle are positioned in a very specific spot, you have to tell me why clipping should be such a problem. Long ponytails / pigtails surely work with the majority of outfits when we consider how normal hair - instead of a puffy-Manga-clichee-style - behaves a ka becomes slightly thinner to the tips.
https://images-wixmp-ed30a86b8c4ca88...2vbsRsntpBL2Qw