Nah, there is little reason to out an offender if there are no witnesses. Then it becomes another he said/he said type mess and nothing gets fixed.

We have nothing in the story to determine race, background, or such, of the person asking the question other than to imply they should have known better. Well some accomplished people truly don't or worse they are beyond reach. There are some who act out of anger having experienced a bad situation and apply the reaction to all subsequent meetings with similar.

Sadly the word is bandied about in some crowds including highly technical groups and sadly bad members of the group normally slighted with the word.

tl;dr ignorance exists at all levels of society but going after it requires an abundance of proof and sometimes its best to use said occurrences to educate instead of persecute

Sounds like a great way to get hit with a libel case.