The gatekeeping is ridiculous. On one hand, was I a little disappointed at the Wildemount announcement? Sure, I've been playing long enough now that I'm feeling like a crusty old grognard, and I want my 5e Planescape, dammit! But, that's not the Critters' fault, and it's certainly not Mercer's fault. The more people playing D&D, the better it is for the hobby.
So long as the "classic" settings are coming in the long run (Which Matt coyly confirmed), the only thing that sucks for us old-school players is the wait. I'm going to keep supporting Wizards, though; I'll buy Wildemount. Hell, I bought the Tal'dorei Campaign Setting on Sunday just because I figured it's going to be a hot item now that Exandria is D&D canon. New settings are good so long as the old settings get some love, too, as far as I'm concerned.