This seems like a natural occurance from the combination of INxP to me. Es keep it together because it's only natural to want to be presentable if you're going to be sociable. Ss keep it together because they can't conceive of doing things differently from "the pack". And Js keep it together because they're Js. Lacking ALL of these qualities makes it difficult.
Even Ts might decide it's logical to keep it together, although I believe that INTPs are worse, but that may be largely due to the gender differential rather than the F/T, since women are much more heavily brainwashed into caring about their appearance than men.