Agreed - As someone who enjoys the taste and the effort being made, Impossible burgers still feel very much like a novelty. There are several restaurants in my area serving Impossible burgers, but they are usually the most expensive burger on the menu. Given that this is going to be a dollar more than a standard whopper, it'll cost the same as a double whopper.

With that, the only real incentive to eat the impossible whopper over the standard whopper would be personal motivation to eat less meat. And I'll hazard a guess that most people eating Burger King aren't immediately concerned with cutting down their meat consumption.