Well, setting the bar higher than Jack Benny himself is a tough standard to expect of either Eddie Carroll or Chuck Schaden. Again, it's your call as to what you find enjoyable or appropriate. However, it's inaccurate to suggest Jack's memory is being tarnished by material he himself used.
Here's a clip of Jack using some of the gags in question on the Dick Cavett show in 1973, so he clearly considered it appropriate, (if maybe edgy for Jack Benny) for a general broadcast television audience 36 years ago. Your mileage may vary, but I'd say, Redd Foxx it ain't!
http://www.youtube.com/watch?v=DBVV6D
I'm sorry you weren't able to enjoy the show, because I know Eddie is a huge favorite and friend to many here. I'm looking forward to seeing the show and judging for myself. Hopefully you'll stick around here and contribute to the many positive and fun discussions we have of Jack and gang, so welcome!