I get it OP.
When I was a young lass I had friends who were vegan/ vegetarian for religious purposes but also some that were for animal issues and health.
All the food were made from scratch (I remember watching in awe one of the dads making tofu!! I still want to try making it!) and we had "wimpy" made at home with bean burgers which I still drool over from my memories because I can't eat that now due to severe bowel issues (I'd love to munch on one but the world would fall out my bottom!).
Back in the "old days" most vegan and veggie diets were a very "pure" plant based from what I saw. They made their own nut butter, made their own tofu and bean burgers/ sausages. Yes you could be a veggie and live off egg and chips but I never knew anyone like that until I got into my 20's.
Then the fast food and highly processed manufacturers caught on and started cashing in on this market.
I had a similar conversation with a couple of my old vegan/ veggie mates about this last year and they also didn't understand this need for "mock meat" .
My mates aren't "militant" and rarely bring up their food choices and love me even though I eat meat/ dairy but one of them got in a right rage over the Greggs vegan "sausage roll".
To her mock meat and highly processed vegan "pretend meat/ dairy" foods are totally against her vegan food ethics. Yes, Quorn may have a lower processing waste method than growing a cow until it is processed for meat but processing Quorn still uses a shit load of energy and water to make when you could just eat a nice "meaty" big mushroom.
As a meat eater I've never understand why, if you take out meat/ dairy from your diet for animal, environmental or health issues you would then want to replace it with some highly processed stuff because you "miss the taste/ texture of meat" or "miss cheese".
She also agreed with me... to her being vegan means that you will miss out on some "mouth textures" associated with eating meat and dairy products but thats the whole point of being a vegan. You don't eat animals or animal products so she can't get her head round to saying you are a vegan but still want to eat something that tastes like animal flesh or butter or cheese.
But I think they are in the tiny minority about "mock meats/ mock dairy" debate.
I think the "definition" of vegan and veggie food has changed over the years and now it's "OK" to eat something highly processed to be made to taste and look like a meat but isn't and call yourself a vegan.
Last time everything was "gluten free", now it's "vegan". I'm trying to figure out what the next food buzz will be so I can get rich!