Re-welcome, Petrichor. As you may have noticed, our forum here serves as a microcosm of the demographic imbalance that you noted. So it's especially nice to have you aboard.
As Danyull hinted, the Learn Wine area doesn't gather as much traffic, so if you have questions / thoughts / observations the Wine Conversations area is you best bet.
Also, one item that struck me from your post was the "international style vs. terroir" comment. I wouldn't recommend equating "old world" with "terroir" (if that was your intention). Just because wine making practices are traditional doesn't mean they don't impose their own impacts on the profile of the finished product.