I feel qualified to respond to this topic because I'm probably one of the few who actually
is an "older reader." Since I first became an anime/manga fan only about two years ago, I think that in itself disproves the 'closed-minded' theory.
When I've tried to talk about manga to the uninitiated, so many people have discounted it, ridiculed it, or otherwise completely refused to consider it as something they might enjoy. I've been an opera fan longer than most people here have been alive. I like Mozart, Wagner, and Puccini, not so much Verdi. I understand that other people have different tastes. What I do not understand are people who say -- often as if proud of the fact -- that they would never go to an opera. To me that is what is truly close-minded.
When I started reading manga, I tried different genres but soon discovered that shoujo, josei, and yaoi suited my tastes. I read some shounen, mostly what can be called 'shounen for girls' such as bishounen-heavy series like
Katekyo Hitman Reborn! and I've found a couple seinen that I like. I read romance, action, mystery, psychological drama, historical, fantasy, horror, slice-of-life, supernatural, and comedy. Sports manga doesn't do anything for me, just not my thing. I've also found that I don't care for episodic series without a story arc - nothing there to drive my interest. I've never tried some popular series like Naruto, Dragonball, or One Piece, and that might be close-minded of me, but my list of other things to read is still too long.
Quote from noisette
...I think people are getting "close-minded" and "recognizing what one likes after reading a bunch of crap one didn't like" confused.
Exactly.