OTD, the problem is the mixed atmosphere and unnecessary “drawing close to each other” that this type of gathering brings. It’s really not a matter of anyone’s intellectual level.
Matan1, please cite which chumra or chumros is/are unnecessary, and who imposes it/them.
On the other hand, some feel that it’s better to dress so that the skirt only covers the knees when you are both bending over and tugging on it at the same time. And this is not a worse “hyper-sexualization”?
Besides, by your logic, we might as well adopt the standards of the nations and just throw the whole inyan out the window. Why shouldn’t a woman wear shorts and a sleeveless tank top (if even that) rather than out holy and dignified way of dress? Let’s not “hyper-sexualize” the arms and legs, right?
It so happens that your logic is that of the nations, while the Torah’s logic says exactly the opposite. Chazal says about this particular Yetzer HaRa that masbio ra’ev whereas mar’ivo save’a. So if a tempting circumstance of any sort were to arise, CH”V, you’re better off if you are as clean as possible, not CH”V the other way.
I’m not saying to go crazy with unnecessary chumros. But Chaza”l knew what they were talking about. Let’s not pretend to be smarter than Chazal.