It's proof that there is less distinction between the sexes than we tend to think. I don't know if mammalian males will ever be without them.
I knew a guy who had six like a dog and he was no less masculine than any other guys I knew.
We have a number of fading traits. You have a scent gland behind your ear, we have our appendix and tonsils as well as wisdom teeth.
Every species is constantly evolving and there is no telling what will come to pass if we, as a species last that long.
But humans have been cut down to a very few in the past and it will no doubt happen again.