Theres a reason there called Underground Comics
Mainly because most people who read comics dont care to read them. Most of them seem to be only about sex. The only person in the underground comic world that i find intreating Harvey Pekar. Mainly because his work as to do with his everyday life and he say it the way it is, witch i like and his work has even gotten into the Mainstream (being Published by Dark Horse & DC). Crumb in alot of ways is just a wiredo and so is his work. Hes not a totally bad artist. But compared to many Mainstream Comic Artist like Jack Kirby, Alex Ross, Will Eisner, Jim Lee, Frank Miller, & Neil Adams, Hes not Great and as a writer well, people like Danny O'Neil, Frank Miller, Jeph Loeb, Neil Gaiman, & Alan Moore are all better. I really dont think Crumb is a genius. If anything Will Eisner was a genius. He was writing (in the 70's) about everyday situations to the Holocaust and he did it without be haveing a naked woman or penis on every page. Sure at the time Crumb was doing his underground comic. Most comics were for kids. but today most of the are for adults (even the super-hero ones) and their are alot of none Super-hero comics. but i dont think crumb help change comics. I think it was people like Frank Miller, Will Eisner, & Alen Moore, who helped change comics and Crumb comics were pretty juvenile in a sick kind of way.
P.s. David Lynch dose suck and American Splendor was a hell alot better.