I dont have a problem with a traditional veggie burger.
I have a problem with strange impossible plant based burgers that “bleed” and were funded by the usual suspects
I have tried the Imposible Burger and it sold me on the taste. It does not matter to me that real meat has different nutrients, The question is if you already plan to eat a veggie burger, do you want to experience the taste and feel of the meat it is pretending to be? The answer is yes, and you also care if it will harm you, so we do tests. If it is all plant based it will be OK.
The people at Impossible Foods want to introduce a product that will satisfy people who for their own reasons want to cut back on red meat. This is a big consumer base right now.
And as for the traditional veggie burger, I have never found one that did not remind me of eating granola and tofu. If I want the meat taste, these new roducts have cracked the code.