For me, it's both. For others, it's religious. For far fewer, it's health (allergies, intolerances, etc). In all of those cases, if a restaurant advertises their product as meat free, it should be or else it's false advertising.
Further complicating the issue is that burger king has for years sold a veggie patty that is heated in the microwave - using separate tools and is "contamination free".
So anyways, if they want to advertise meat-free, then it should be a meat-free product that is served to you.
I find it hard to believe that such a person would willingly go inside a Burger King in the first place.
I mean, every surface in one of those places is eventually coated with a layer of grease, right?
They cant claim Vegan if there is animal product in and on it.
Then there's really no such thing as "vegan". All fruits, vegetables, grains, flours...have a certain number of insects in or on them (especially if they're organic).
It would be possible to have some definition like the one for Kosher rules (fundamentally, less than 1 part in 60 doesn't count, though there are many nuances on top of that), but 100% absence of animal products is simply not possible.
You may well fid it hard to be believe, but vegans actually have meat eating friends and may be accepting of other people's dietary choices, and may want to socialise with them - without putting meat products in their mouths.
Some of those include discomfort with eating animals and their byproducts, as you mention -- for others, it's based on a desire to encourage more sustainable environmentally-friendly food options.
For some subset of the spectrum mentioned, cross-contamination is an important issue - and for the rest, it may be acceptable under some circumstances, but there's no downside to removal of contamination, so they'd likely support it given the choice.
There may be a downside, if the cost of compliance is too high and the business decides to stop offering the product.
If they'd used their own cutlery there would not have anywhere near as much animosity.
I see this sort of behavior as irrational. But I dont live these peoples lives and dont believe what they believe.
I just liked their food :-P
ie, could never be cleaned enough to be "vegan" again...
bloody bonkers really.
Edit, yes it was metal...
Wouldn't vegetarians, religious folks, and alpha-gal syndrome sufferers also want a zero animal-product burger? The market is pretty diverse for this demand.
I did address alpha-gal by saying that those who have allergies should be mindful of cross contamination in restaurants that serve the stuff they are allergic to.