Noggin - you are technically correct in-so-much as a proficiency check with an examiner will revalidate the licence (or should I say "renew")....but your posting gives [me] the impression that you are suggesting that it will also be sufficient - and that whilst you would expect Born Sinner to be current at flying a multi crew, twin engine turbine (the 737), he does not need to be current to fly a single pilot, single piston engine aircraft - with carburetor heat, mixture controls and manual trim.
It is a sad fact that a PPL examiner will likely, no matter how scruffy 'Sinner' may fly a light aircraft, look upon the experience of a 737 pilot and sign the licence page anyway.
I remember watching a 767 Captain going through a PPL renewal, whilst on a lay-over here in Florida - guy could not follow a half mill chart (and he was the first to say so)...was too used to glass cockpit.
Having read your previous posts on many threads over the months/years, I do believe that you are saying it will be sufficient for another two years...but I certainly read it that way.
<<edit: for typo>>