Back in the early 70’s, a buddy of mine thought Rickles was the best thing since ice cream. Went to see him ‘live’. His reaction was much the same as that of your FIL.
Oddly enough, that’s something wrong with the current crop of “comedians” — too many can’t be funny on network TV unless they’re letting the censors bleep out everything they say. They can’t run a clean show and be funny. They need to appeal to the crowd that laughs and nudges their friends, “heh-heh, he said %$@!##”