I agree. Things that could constitute compliments on "sexiness" or "hotness" coming from friends are often unwelcome advances when they come from complete strangers. It's verbal harassment, not a compliment.
It might surprise you, DS, but I harbor no personal objections to my being complimented by strangers. I once worked in a gay bar serving alcohol, and I was not only frequently complimented on my looks, but I was often enough (at the very least, nightly!) touched by perfect strangers.
Not groped, mind you! These were almost everyone of them polite people. But a hand now and then might very lightly graze my butt, as if purely by accident, or someone might quite unnecessarily help me keep my feet under me by grasping my arm, while gently squeezing my muscles, to steady me.
I never had a problem with any of that (although I would, however, have issues with a passing car of strangers yelling at me. But to me, those are very different situations.)
But I will defend to the death another person's absolute right to feel offended by such things. If I were to say to you, DS, that you should take no offense at having your butt "accidentally touched", just because I myself have taken no offense at it, I would then embarrass myself with my own arrogant disregard for your feelings and for your human rights.