I think you are right in that if tournaments are organised well it is usually very safe, but there is another dimension....lets call it "romantic interest".
If you are there to play chess it can be an extra thing to have to deal with you don't really want.
It's usual for tournaments and team matches to be "man heavy".....if you want one that's great...but if you don't, it can get a bit tiresome.
I think thats true of pretty much any thing tho...men will generally try their luck with most women in most places, not jus chess tournaments lol ..n from wot i seen it seems like top chess players get wit other chess players anyways...most of the GMs i have watched so far are married to WGMs or high level players...am sure Giri is married to a chess player, n who is the dude whos wife died? Aronian maybe...she was a chess player too right? Cant really blame the fellas for tryin to meet a lady in a tournament rather than at a bar or sumthin where he probably wont meet sumone like minded...u wud think the attention wud be kinda flattering...i can think of worse things than playing at a tournament with a bunch of talented females who all want my number hahaa
My experience at mixed-gender tournaments is that the men are either too nice, or too dismissive. Very few men treat you just like another competitor unless you're really good (which I wasn't).
Just look, where they are looking