To be sure, I am not questioning the "pornographic" aspect of some of Crumb's work.
Hard-core pornography is "accepted" by society today? Is that true?
Because hard-core pornography is accepted by society today, we now appreciate Robert Crumb more?
I'm not seeing it.
Robert Crumb was accepted (by some) back in the 60's, 70's, etc. long before the internet and PornHub.
Robert Crumb is rejected (by some) even today.
If he is more popular today than he was 5 decades ago it's because he is an elder statesman of sorts with a rich (storied) and wide body of work. He is an icon of an era and a movement both culturally and artistically. He is an amazing artist with an identifiable and unique style.
That's not even an incest one