Maybe it's because "rednecks" are the last identity group to still have a sense of humor.
The OP is illustrating exactly how far and now destructive this PC nonsense has become.
Contrary to what the usual suspects would have us believe, no one is advocating a return to any kind of blatantly racist and sexist past. But there's a whole bunch of people running around these days looking for an excuse to be offended. And they are sure to find it. Because that's what they are looking for, instead of looking for ways to find common ground and get along.
Thankfully we have progressed to a point where normal men realize that women don't generally appreciate being hit on while they are trying to work. But Good God, tapping you on the shoulder to get your attention is NOT the same thing as grabbing your behind! And smiling at you does not constitute sexual assault!
It is certainly a good thing that we are now educated as to the importance of trying to avoid giving offense to others and of course one should take all such reasonable measures. But it is counterproductive to have to walk on eggshells all the time for fear that someone, somewhere, just might possibly be offended. Because guess what: someone will.
People who are easily offended find themselves offended often.