I never said anything about genetics.
No one knows what parts of the brain make some people like some sounds and not others. There could be physiological or neurological reasons to explain some aspect of preference. There might not be. Certainly at least some of musical instrument preference is cultural.
The point is simply this: for whatever reason (physiological, neurological, and/or cultural), women, on average, seem to not enjoy bagpipes as much as men. It’s the only answer to the question that addresses all the points that have been raised.
Here’s a counterpoint to ponder. If you attend any lower-tier professional orchestra in the USA, the violin section is dominated by women. Go figure. I say “any” but I haven’t been to all of them. Maybe there is one somewhere that’s mostly men, but most of them are mostly women. On the other hand, the brass is usually mostly men.
BTW, I did a wee experiment last night. I skipped through about an hour’s worth of traditional music on my iTunes (all 34GB of it), just playing a few bars from the beginning of each track and made my boyfriend (poor guy) try to guess the gender of the musicians. He was able to get the vast majority of them correct on gender and a significant number correct on naming the musician (I’m not giving made up stats. In the best tradition of utterly halfas*sed research, I didn’t bother counting and calculating the percentages of correct answers). He said the playing style was only indicative of who it might be, which made him more likely to correctly guess the player’s gender and also that there were a lot of other variables he made use of – i.e. Something might obviously be Cape Breton fiddle, the recording is quite rough and scratchy, which means it’s unlikely to be Natalie McMaster. Not too many other female Cape Breton fiddlers have made that many recordings, especially older recordings, so the musician is probably male.
I don’t think that’s at all relevant to the OP’s initial question.
Since your BF was seemingly familiar with the music in question, it wasn’t really a fair test. If you played those same tunes for my wife, she would be very successful too (I’ve done it), even though she’s not familiar with the music. She probably couldn’t correctly identify Irish vs. Scottish vs. Cape Breton. Her skill is also strictly limited to violin/fiddle players.
I agree that your BF’s ability to identify a wide variety of musicians by having become familiar with their playing styles, and having a good understanding of the history and so forth has little, if anything, to do with the initial question. But my wife’s ability is quite different. She isn’t familiar with more than a very few Scottish/Irish/Cape Breton fiddlers. And she doesn’t listen to classical music regularly. So you could play bits of 20 violinists playing Bach’s works for solo violin, and she’d tell you which recordings were made by men, and which by women, even though she had never heard recordings of any of the violinists in question. I think this is related to the original question, because it indicates that there is something about gender that can be heard in (at least some) music, by some people. If it’s something that can be heard by the trained ear, then it’s something some people will have a preference for (one way or the other).
That is exactly what the original question was really about to my mind: “what is it about bagpipes that make them more popular with men than women?”
) 
We might be thinking of some of the same people - there are certainly more than two women making significant parts of pipes at the moment. I’m sure Haike, for one, is well able to make a complete set, although for the moment the current arrangement seems to suit her better. (cf Boyd’s comment - Hi Boyd!)