Neal Martin has written a few more positive things about Spanish wine, including some detailed and laudatory comments about tastings of old Rioja, since he made that 2006 statement in his blog. (And he's also written a few other, again negative, ones). I've discussed this with him, and I think we're now talking about the same things: what's bad in his mind and mine is not Spanish wine in general, but the tendency to over-extract and over-oak, i.e. to spoof, shown by a number of (usually) new producers with little background in viticulture and the culture of wine, mostly creatures of the 1990s.
Of course much of this trend has been attributed to Parker's influence, so it should be interesting to see the new Parker man criticize it, as I think Martin will. Me, I go back a little longer and I think the trend was started over 30 years ago by Bordeaux-trained winemakers (quite a few Spaniards in the lot) who followed Émile Peynaud's dictums about lush ripe wines. But of course the trend accelerated as The Wine Advocate became ever more influential. Now, TWA critics such as Schildknecht, Galloni and Martin seem to be going in a different direction. In the case of Spain, it should be helpful when the spoofers are becoming progressively more isolated. We'll see.