I will bet that Crumb, as a nerdy high school guy, was only interested in dating the homecoming queen or other beauty queen types. If he found them to be shallow due to the fact that they were uninterested in him, I think he should first look at his own shallowness. Did any girl who was not Playboy material have a chance with him? He expected them to appreciate his good qualities and “inner beauty” when he could not appreciate theirs?
I think many of us who were not either beauty queens or star athletes had similar high school experiences with dating (or lack of it). Most of us grew out of it. Those of us who are lucky manage to find partners who grew out of it, too!
Sure there are guys and gals out there who are still shallow. Plenty of men over 50 are only interested in dating women in their 20s. But would you really want a guy like that? Many women are only interested in dating Brad Pitt. Do you really want a woman like that?
Crumb had-has weird sexual quirks, to put it mildly. He loved women with huge rear ends. And he had a shoe fetish. He idealized women in some respects, but disliked them in others. He's a typical nationalize everything leftist, but hates feminists and rock and roll...especially Bruce Springsteen. He confessed that he didn't find skinny women attractive. In short, he was a mess. Which he readily admitted in his comics which were mostly autobiographical.
I haven't read anything by him since he moved to France over ten years ago, but I doubt he's changed much. An award winning documentary was made about him (called "Crumb") in the nineties shortly before he moved to France.