I certainly have not read every post that rejects modern music, but I always thought people rejected modern music because they didn't enjoy it. In fact, everyone I personally know who enjoys modern music started off disliking most of it. That includes myself....As to the rest of it, I'm just making an observation about this forum. There are a lot of conservatives here, who relate only to their brand of classical music, and reject modern music because it's too "liberal." I didn't realize how widespread this attitude is, and never made the explicit connection with politics...until lately.
This makes me realize how fruitless is is to engage in dialogue with them. They can never be "converted" or even expected to be tolerant of modern music and its fans. We are "the enemy."
I often enter threads discussing modern music to let others know that one can hate the music and wonder why anyone would ever write something so awful but later learn to love it. I doubt I've influenced many to modify their views, but if even one person was motivated by my path (and others), that would be worth my posting.