This appears to be published by a group of folks from China where political correctness hasn't infected every aspect of society. It's ok to not be offended by everything.
That folks like you think advocating for diversity is about "political correctness" rather than building a world that is better to live in is very sad.
Diversity is fine. Forced diversity is not. Having different opinions and things that are not forcefully diverse is it's own form of diversity. Making everyone conform to your ideas is not diversity.
I mean, give me a break. They're completely tame other than being mostly women, but apparently that alone is enough to send people into a fit of hysterics.
This paper is what I'd characterize as "horny on main" (https://knowyourmeme.com/memes/horny-on-main). It's embarrassing. They've spent all this time doing impressive, cutting edge research just to make women (and girls!) dance for them. They could have chosen a dataset that at least made them look cool, rather than like weirdos. It weirded me out! Very likely weirded out others.
Citation needed