Does the Stoker fan power plug fit the DX2? Although I'm not familiar with the Auto Dampner feature, if you mean it just closes the dampner when the fan stops, based on air pressure, and the fan lead is just positive and negative, it should work - provided it fits the BBQ Guru adaptor. If not, you'd have to get the Stoker adaptor.
Interesting question as I do know a few folks have wondered about the air flowing freely through the BBQ Guru's fans when they are off, so an auto dampner sounds like a neat idea to explore.
I agree, that while I'm a tech nerd too, I know all too well how networked wifi gizmos hiccup (sometimes quite frequently), and I can't imagine anything worse than something happening while I'm sleeping with a long cook, and guests coming the next day, resulting in a disaster. Imho, a DX2 with a Maverick remote set correctly is the most reliable set up you can have, short of sitting beside the smoker the entire time. My .02 fwiw.
I'd be very interested to hear from folks with alittle more experience with both products.