Taiwanese American here (though I lived mostly in the US, I feel about 50/50 Taiwanese/American).
Chu Ke-liang was a staple of entertainment in my extended family. I remember catching glimpses of his shows as a kid, and was amazed to see him back at it in the last few years. I always liked his humor.
Humor is subjective. What Americans see as sexist, crass, etc. may seem normal (my mom doesn't see Chu Ke-liang's humor as a problem). Some Taiwanese may see American humor as dumb, crass, and too politically correct. It's all perspective.
As for someone remarking about how selfish he was, I can't speak to his earlier behavior, but my understanding is that he came out of hiding as a way to start working again and pay off his debts, and rather than fighting the cancer he chose to keep working to continue paying off the debts. So in the end I don't think he chose the selfish route.