Speaking as a relative non-snob, I'm always a bit baffled when people cite Joyce like this. I mean, he clearly had an unrivalled mastery of language, but do people actually like reading prose like that? Even his supposedly more accessible stuff like Dubliners and Portrait of the Artist just seemed so dense and obtuse that while I could objectively admire the skill on display, I never once really found myself enjoying them.
I'm not saying art should exist purely for the sake of entertainment. But, ultimately, if I'm investing the time to read a book, I need to get something out of the experience from moment to moment, and generally I find I get more from reading a bad writer with fun ideas than an expert stylist who makes no concessions to enjoyment.