yeah I'm a proponent of more plant food and I also don't think the taste argument holds up, especially because taste is so subjective

that being said, for burgers specifically, I think most people don't realize just how much of the flavor heavy lifting that fixings and condiments do. I remember making a lazy bitch college "meal" of black beans in a bowl with ketchup and mustard (the only condiments I had), and being mindblown that my bean bowl tasted like a burger. I regularly purchased meat back then, but that experience got me into cooking bean and other vegetable based burgers (certainly easier on the college kid wallet)