Just piling on here. Certainly have noticed the same thing.
Was in the wine store in Lincoln Sq. recently getting a bottle to bring to dinner and asked the owner for something (red) that would NOT be a big fruity bomb---e.g. something a bit austere, with some earth, and some structure. He said, except at the very high end, they're just not making them that way anymore because global demand is for meaty, beaty, big and bouncy.
Also going back to the late 70s, I remember that rhone and chiantis and many other under $10 bottles could be had that were a bit rough, rustic, and had interesting woody flavors along with all that smuckers. No longer. I think some of it is the downside of all the technology that has, on balance been good for wine-making. Because while the jam-bombs are everywhere, there is much less chance of getting simply bad, bad wine anymore, even, or especially at the low end. Whereas it used to be a crap shoot.
Now nearly anyone, with today's control over the process, can produce a drinkable, if personality-free bottle. But, alas, that gets us the fuit and alchohol explosion.
I would imagine that global warming has an effect as well. Lots more sugar in the grapes, and more residual sugar even after a whole lot if ithas been converted to alcohol, thereby producing something both high octane, and high yucky fruit.
Disclaimer: The latter is pure amateur theorizing. I am no expert at all on winemaking and chemistry.
But I do miss the old wines. So much PN nowadays tastes like bad Beaujolais. Alas. (Sigh.)
"Strange how potent cheap music is."