Erik Larsen can shut the fuck up.
Here's the thing. There's nothing wrong with sexy. Sexy is great. But a female heroine shouldn't *just* be eye candy. She should look badass, not ridiculous. Let's take different versions of the same character: Gamora the assassin, from Guardians of the Galaxy. In her earlier versions, she's wearing effectively nothing: a belt of metal spangles and a mesh body stocking.
Sexy, but kind of ridiculous, not at all badass.
Later versions did away with the body stocking and instead had her in some strategically placed ribbons. Again, sexy, but ridiculous.
Then you've got the "stormtrooper" armored version (I think J Scott Campbell did that one) from more recent years - still a hot green skinned space babe, but one that looks like she can kick ass and take names with the best of them.
And then you have the MCU version - bracers, sleeveless semi-mesh shirt, and trousers.
Simple, functional, looked fantastic on Zoe Saldana, and she had some of the best fight scenes in the movie. So you can have sexy without being ridiculous.
The "vocal minority" argument is severely undercut by some simple facts: the MCU costumes are, by and large, far more practical than their comic book counterparts, for obvious reasons, and the Marvel movies have made seriously all of the fucking money. The Winter Soldier made $700,000,000 worldwide.
Guardians of the Galaxy made almost $800,000,000. So in one summer,
Marvel Cinematic Universe made almost 1.5 BILLION dollars. That's way more than they've made selling comics for probably the last decade. When you have more people seeing the movies than reading the comics, and the movies viewers liking the more practical costumes, that's a pretty strong argument.
(copypasta'd from discussing it on FB with David Faught et al)