Sheesh - it is a pair of boobs. Big deal, over half the population have them. True that many should keep them covered, but if they want to let them swing free, fine.
It reminds me of the last time we went to a restaurant. My wife is still breastfeeding and one of the customers got a little bit upset and made a fuss about her breast feeding in public. Note, she was covered up, she does that for politeness as she is somewhat modest. This customer made a fuss with the staff, so I walked over and asked why the hell he was looking at my wife's boobs in the first place.