This weird “non-binary†trend — my theory:
Really good for marketers, and capitalism.
Why? Non-gender clothing is easier to produce and sell.
Also not always, but many non-binary people prefer to *NOT* have kids, and also a lot of these non-gendered kids and people prefer to assert their individuality via their clothing and fashion options, thus once again — greater marketing, profits!
My simple thought:
Gender is fluid, sex is solid.