Inappropriate serving temperature, overfilling the glass, and drinking wine fom plastic/styrofoam cups rank right up there... No, I don't think these are any signs of snobbery, but rather of good practices aimed at maximizing the wine drinking experience.
I'd love to own some of the Mosel's best rieslings, perhaps from Markus Molitor. Once, long ago, I tried a red wine from the Ahr region of Germany and it was wonderful. Ahr wines are almost impossible to find in the U.S., but I'd happily add Ahr reds to my collection.