It's not that unusual for topics like this to have people with very different ideas and what counts as appropriate/inappropriate bodily exposure.
I don't really view breasts as "intimate parts", so my reaction upon being flashed, would probably just be "yes, those are very nice, but the price is still ..." Surprisingly, random flashing has never been a thing in any of the games I've run or played, even the really adult ones, probably because casual nudity means that exposed breasts are not shocking or unusual.