No, 100% agree. Cleese was my favourite Python at the time, followed by Idle. As you say he's just become an embarrassment now, almost a parody. Watching in retrospect I find that I much prefer the Palin and Jones stuff - inasmuch as I still find any of it funny. Of the spin-offs it's Rutland Weekend Television, Fawlty Towers and Ripping Yarns in that order.Palin. Jones was nice too. And Gilliam. Idle, too. and Chapman. I was also a fan of DNAYS, with Denise Coffey and, yes, David Jason.
Cleese however, despite the genius of his comedy, now sounds like a pompous old tit, and100% grizzling gammon, and I can't warm to him at all. He's the Paul McCartney of the Pythons; only a matter of time before he wants the writing credits changed to Cleese et al.
Apologies if that's a bit harsh.
And a GREAT shout for Do Not Adjust Your Set, possibly my favourite TV show of all time. I was about 10/11 when it was broadcast and I thought it was beyond brilliant. Those adventures with the evil Mrs Black were incredible.
EDIT: And I loved an interview I read with David Jason about that DNAYS team. Obviously a lot of them (including Neil Innes from the Bonzos) went on to do something with Python - but not Jason.. He said "It was like being in the Beatles. And I was Pete Best."