I mean, it's not an unfair criticism, and I'm sure there are plenty of people who are sincere about this. But I think a lot of people, consciously or not, aren't truly motivated by that argument.
There's an entire universe of characters in FF who wear clothing that's extremely inappropriate for the given environment, and none of them get this same level of hate.
I'm reminded of the announcement of FF Mobius.
Back at the old place, before the split, there was an extremely visceral and negative reaction to the design of the main character, a guy dressed in the the same super impractical, ultra revealing nonsense as half of all female FF characters.
As a bi man, I was really happy to see a dude get the same stupid, sexy, objectifying treatment women get in these games. I fuck with this. But the reaction was so strong, Square relented and covered up his chest, since it was just
so upsetting to male fans.
The only difference between these characters and their lady counterparts is that they're
men displaying their sexuality—sexuality of, dare i say it, a slightly submissive nature.
Here, male presenting nipples are not to be tolerated.
EDIT: Unless, of course, they're MANLY nipples. Nipples for MANLY men
no homo.