Unless you are a vegetarian or aspiring to be vegetarian, plant based burgers are an imitation of the lowest level burger you can buy. They are incomparable to a hand made, excellent hamburger. I think a large part of this is they are always WAY too lean. Add on to this the fact that they are usually 2x the cost and you won't see meat eaters going out of their way to eat them aside from curiosity.
Vegetarian cuisine is best when it isn't trying to imitate meat based dishes. For instance, I've tried using imitation beef crumbles for tacos. But they are vastly inferior to my Potato Tikka Masala tacos.