Yeah, me either. We routinely rank among US leaders in O plays of over 20 yards and we get easily as many yards on the ground as many teams get in the air.
I think the problem is that our O is designed to work instead of depending on highly skilled athletes in one-on-one situations. That means that to enjoy it you have to a) sort of know what is going on and b) like to watch Os that work like your watch. A whole lot of football fans aren't up to that. They want to watch "their" players out match the other side by skill alone so they can brag about how good their team is and talk about what a good athlete <your favorite feature player here> is and what he'll do in the pros. Frankly, I find that supremely boring myself, but I'm an old OL nerd who enjoys trying to figure out how plays work. And who loves to watch a team where the OLs actually, you know, hit people.