newt,
I think that you are just trying to be controversial? Whilst I do not agree with many of the "new phrases" which are often just excuses I do believe that skill fade exists.
I recall that I was at my peak as a 2nd tourist with 1000 hrs on type serving in RAFG. Normally flying twice every day unless in the tower or on the desk, one was provided with excellent continuity.
There was no doubt that after 2/3 weeks summer leave in south or France, Italy or Spain one suffered from skill fade. It took a couple of "medium tariff" trips to get back to being the best fighter pilot in 2ATAF (at that time and in my humble opinion)!!!