Here's some more anecdata for you. I grew up in the UK and made some questionable choices in my teens and twenties in terms of revealing a lot of cleavage, leg, etc. I was never sexually assaulted or raped.
OTOH I spent 5 years living in the ME and experienced 3 sexual assaults, all whilst modestly dressed. The first - man randomly grabbed my right breast in a mall in Abu Dhabi - I pushed him and yelled, making a scene, Nobody helped and a few people looked alarmed and scurried away.
The second - man came to my apartment in Dubai to deliver something and pushed his way in - I threw him out, complained to his employer and he was dismissed from his job (which might have meant deportation), but all concerned advised against telling the police.
The third, and worst, occurred in Saudi Arabia. I was staying in a hotel in Riyadh where they had a corridor used to house "business women" (so basically everyone knew where to find rooms full of unaccompanied females). Four men tried to break down my hotel door, initially with their key cards and then with force. I was on the phone to the hotel receptionist who simply pretended he could not understand what I was telling him. (He'd spoken perfectly good English 10 minutes before). I suspect this was because the men trying to get in were Saudi and well-connected.
The men in countries where "modest clothing" is the norm don't behave any better. There is just much less recourse for women to do anything about it - e.g. in Iran (where DH is from), a woman's testimony is worth 1/4 of a man's, and it's not exactly difficult to see how that's going to turn out.
Rapists are the problem.