OK, as promised, in the last two nights we opened a 2012 and a 2014 Occhipinti Frappato to check if the above story makes any sense. The first 12.5%, the second 13.0%.
The 2012 was delightful, glouglou with structure, the fruit tending towards cherry with herbs and graphite. Reminded me of the Frappatos of yore.
I pretty much liked the 2014 as well. It was darker, and the fruit tended towards strawberry/raspberry (also with graphite), which I generally prefer, but there was something less charming about it.
In any case, I thought the difference could be easily attributed to a different vintage and the younger age, but Marcia surprised me by thinking the latter somewhat easy and modern, more suited to less naturally-oriented drinkers.
So, while the 2014 was still quite good, contradicting the thrust of the story, the jury may have to stay out about whether there was a change of style.