Of course good grooming and hygiene is a duty we have to YHWH in honor of creating us and gifting us with hair in specific places as Male and Female at the age of puberty.Yet it is overwhelmingly the case with pagan lesbians that they don't shave or groom anything.
I think there is a healthy argument to be made for good grooming. Likewise, the popular culture that wants women and men fully shaved is trying to make women and men appear like prepubescent girls and boys. This to me is evidence of a dangerous undercurrent of pedophilia that is prevalent in popular culture.
Which reminds me; Now that President Trump is declassifying the JFK, MLK, and RFK assassinations I'd like to see him declassify the Jeffery Epstein client list.
Having your hair or beard drag on the floor is simply impractical, but hair that is too short on a Woman often gives her the appearance of a young boy and Men with hair too long from the back often can be mistaken for a Woman.
Beyond this, certain lengths are up individual preference.