Your earlier post seemed to be drawing an analogy to Champagne expanding only to have demand decline.
It’s a 1% increase a year in the Langhe, with a preference for contiguous vineyards already planted to nebbiolo. Much or most of those vines may be up to minimum Barolo/Barbaresco quality levels now. There’s already a lot of Langhe Nebbiolo that that’s very good, and most of it is made in a more approachable style – with shorter macerations, in particular. Treat it like full-fledged B and B, and it would likely be more “serious” wine.
Did Champagne demand decline or did demand for lower-level Champagne grow by less than the increase in production? Again, I doubt that any of the increased production was going into CdC or Dom Perignon.
Enjoy paying double the price for Nebbiolo d’Alba with a new label on it. Reclassifications are rarely good for customers, whether in Burgundy or in Barolo. Generally just means raise the price. Doesn’t matter that much to me. I don’t buy that much Barolo or Barbaresco anyway.
I believe Champagne sales declined in the late 2010s, then were hammered in 2020, as there was less partying. They hit a new record in 2022, but the trends were not looking good before Covid.
As I said above, most Langhe Nebbiolos now are made in a lighter style. I would guess that if the new sites are chosen carefully and the wines are made in the same way as B and B are, they won’t be inferior.