Let's boil down the reason as to why this is happening.
A meme has been spread that sexy is offensive to female gamers so developers go out of their way to avoid it for fear of offending female gamers.
When you look at it that way it makes sense why even the MK devs will kowtow to this, nobody wants a big PR disaster, but the thing is, it's all a lie, the people who complain about sexy characters do not play video games or at least definitely don't play games like Mortal Kombat, they're just trolls intentionally trying to make video games worse because they hate gamers and see us as "the enemy"
Real female gamers like sexy character designs, as evident by the countless cosplay you see as sexy characters, a normal, sane woman does not see sexy as an attack against them, they like it, they like to live vicariously through these characters, they find it cool.
Devs need to learn to just ignore the vocal minority of SJWs, they do not represent their audience, the world will not end if they choose to simply ignore them.
I have a feeling Cyberpunk 2077 is when this trend will end, the game will be sexy and is sure to be a big hit, that will send the message that sexy is fine to have in a AAA game.