I had the same experience with “The Jack Benny Show”. I used to love it then began watching it on some rerun channel and it didn’t seem very good.
Then after a week or so, it got better and better. I think you sort of have to get into the feel of the show again.
BTW, “Rockford Files” was one of the all time greats. James Garner was another Hollywood liberal. I just ignore that and enjoyed the show.
Now if they are really in your face about it like Jane Fonda or Sean Penn, then it is just too hard to ignore their politics.