To the first, IF as you say it's 2/3 women, and IF as one short Google search suggested to me it has around 13M viewers, and IF we agree that those are all in the US and the US has around, what, 100M adult women?... then that's 8% of those adult women watching it. If those 13M include people outside the US, then it's lower than 8%. Apparently 92% of women do not watch DWTS.
In response to the second, I don't understand your point at all. Help me out here?
As to the third, I agree that there certainly exist some fools, most of them white and liberal (and maybe prigs?), who have a mental pattern wherein they make knee-jerk complaints about certain behaviour being offensive, without having a well-considered ethical system that justifies this complaint, instead using these complaints to signal their belonging to a certain social clique. If that's what you mean by political correctness, I agree that it exists, and is odious. Whether or not such fools object to your remarks should be entirely beneath you, however. So raising the potential political incorrectness of your remark appears, to me, to be saying "I'm going to use this straw-man argument to attack those who disagree with me". And this is why I brought up the fact that it's a lowbrow dismissal, and suggested that on those rare occasions when the label does fit, you can instead construct an independent explanation of what's wrong with the political correctness.