> It's wild to me how ostensibly straight dudes got confronted with a little booty-shaking in their superhero story and they were all like "ewwww."
I don't really consume MCU stuff, but having seen the scene in question, I think the "ewww" has absolutely nothing to do with sexuality and everything to do with the weird, annoying, try-hard-to-be-trendy vibe that it represents. It's the same cringe as the Hillary Clinton dancing on Ellen thing from a few years back.
There was a time when comics were counter-cultural, niche, and interesting, bringing new ideas and stories and art into the world. Now, they're under the control of the Mouse, downstream of the cultural shit funnel and as a result, completely, laughably uninteresting - and worse - no longer cool.