Of course it is, because it should be pretty obvious that they do want meat. If they didn't want meat you wouldn't be having the argument in the first place, right?
I've never tried a real honest to god direct replacement for meat that I actually was fooled -- even for a moment -- into thinking might actually be meat. I've had some delicious vegetarian dishes, I've had some delicious vegan dishes, but those things definitely just aren't the same experience as eating meat. Tofurkey just don't cut it.
Which isn't to say that I'm not open to the idea of having a 1:1 lab-made replacement for meat that is indistinguishable from the real thing. I most definitely am. If you could provide me with lab-meat at even just a small premium I'd probably go vegetarian where that option was available.
But boy do I love me some meat-or-indistinguishable-from-meat products in my meals.
Question: does that count as going vegetarian? To me that's just going techno-carnivore.
But very often the prices on these vegetarian meat substitute products is the same or higher than the comparable meat product. I think that's because the food system, and various subsidies to "big meat", make meat unnaturally cheap.
You'd like me to try vegan food? Make real vegan cuisine with its own flavors and consistency. Don't try to make fake meat, I won't eat vegan to taste something meat-like. I'll eat it for good tasting vegetables and fruits.
But there is one last reason for the "I can't believe it's not a dead animal!"-burger/dog: Culturually, people invite you to barbeques. If you show up with your Shoujin ryouri bentou, people look down on you and tell you that you're stuck up. If you show up with an eggplant and a hot dog bun, they won't call you stuck up, but they will reasonably say, "You're really going to grill an eggplant and stick it in a hotdog bun? That's why vegan food is so sad". (BTW, that actually sounds good to me :-) ).
Yes, vegans want to go to barbeques and fit in and not have to explain why they decided not to eat meat. Sometimes they just want a normal western cultural experience without having to compromise on their principles. Sometimes they grew up with this kind of food and they are feeling nostalgic. There are huge numbers of reasons why people do these kinds of things and why it is a big deal to them.
And yes, they should learn about cuisines that are culturally vegetarian for many, many reasons as well. Most do even if they also eat processed vegetable protein in a package.
And I believe these imitations really do help a lot of people make the transition either away from meat or towards less meat. Which I see as a good thing.
My wife is coming around too and you know what? Foods like this are the gateway drug for those of us born and raised on meat to change our ways (should you want to... if you want to continue to eat meat that is your path in life to take!)
Edit: To note that I've only been a vegetarian for about 8 years (or around a 20-25% of my life), so definitely get the occasional craving for foods I used to enjoy in the past.
There's also the aspects of food as a culture or social participation. People want to be able to participate in things like BBQs or eat out at restaurants with friends.
I think even vegans/vegetarians have to acknowledge they are killing plants to eat. I suspect the better for environment/health argument is more prevalent (why I eat little meat).
At some point somethings going to have to die to feed yourself (until we can gene edit photosynthesis into humans..). I take some consolation that I'll be feeding bacteria when I'm gone.
so I wondered why it's a no brainer that plants are ethically ok to kill and eat but species closer to us aren't.
Anyone who's dealt with animals or pets sees intelligence and Personality. So it's easy to have empathy and want to let them live (especially if they're cute and docile). Nobody likes killing animals if unnecessary (for the most part, I never understood hunting for sport). Factory farming doesn't leave a pleasant feeling either.
But there is a trend of getting protein from bugs.. and I'm wondering were that fits into people's thinking.
It's more of a thought experiment than anything.
Idle thoughts from a species on top of the food chain with ample calories available that is the steward of the planet (and not doing too well)
Also, more options for variety and stuff.