So ... I am going to have to disagree with this. You are welcome to your opinion, of course. But it's not one that I share.
Whether you think that the various images I have now shown (from Conan to Top Gun to Fight Club to Lost Boys) are sexy or not is your choice to make. But they are certainly sexy to a lot of people, and they are iconic for a reason. The reason Conan (Arnold) isn't wearing armor and is all oiled up ... it's not just because it's "Oh, powerful muscles." It's about an idealized and fantastical and sexy image.
This is why I made the comment about this being difficult to untangle from cultural issues; if you look at the list of movies (and the unapologetic exploration of the male form) these are often seen as overtly or covertly homoerotic. Which goes to the original issue that I am disagreeing with- that by making the argument that you are, it further codifies the idea that it is shameful or wrong for women to unapologetically enjoy the male form. That "armorless" men are not sexy, just "tough." Heck, even a movie (and a series) like Magic Mike, which was unapologetically appealing to women, is often viewed solely through the lens of being homoerotic because we are uncomfortable as a society with allowing women to simply appreciate men in a physical (and visual) way.
Which I don't agree with, at all. Again, it's why these conversations are fraught, because it's hard to unpack all the different issues that are going on. That said, I think that D&D, as an "all ages" and "big tent" TTRPG, should be doing exactly what it has been doing in terms of art direction- staying inclusive an