My take on all of this is that I think a lot of people have trouble with only one set of knobs. They don't take the time, or don't have the ability, to tweek the amp for the best compromise between clean and dirty, and they get either clean they don't like or vintage they don't like.
I also think that most people struggle to dial Mesa amps at all. If you use the tone controls in the same way you use your Marshall, Fender, Diezel, whatever, you're never going to get there. I know I struggled with that on every Mesa I've owned.
And then even in the best circumstances, the Dyne is not for everyone. I think I've written more than once that I don't care if everyone but me hates the Dyne, or even if they discontinue it. I have mine and I'm happy. I can't wait to see what they come out with next.