Good points about ease of cooking and error.

So much of short-term adoption of these is tied to marketing and time, but their long-term success strikes me as a foregone conclusion.

In marketing, they will need to get past a latent psychological hurdle and in time, waiting for the crotchety older folks who insist, no matter what, on a "real burger." Both things are related to the living generations who have grown up with "real burgers."