Legislators that want to keep trans women out of women's bathrooms are usually much less concerned about upskirt photography. This supports the thought that they aren't really concerned for the non-trans women in those bathrooms.

Those women do have a valid concern, which conflicts with the trans women's valid concern. I am not sure what is best to do.

Men's desire to take upskirt photography puzzles me, because you'd see many women wearing similar things openly on any beach. Perhaps they want it only because it is prohibited.