M0nica
Norah I did not say that the vegan diet as a whole, was based on UPFs, but you have only to look at the range of manufactured Vegan foods, all the fake meats, fish, dairy products to know that if a vegan chose to base their diet on buying a lot of these products, then they would be eating an unhealthy diet. Those that exclude these produts will obviously not have a problem, but the range and quantity of these foods available, given the number of vegans, suggests that a lot of vegans are eating them.
When my DD was a child her closest friend was vegetarian. I would go to great lengths to prepare a nice vegetarian meal rich in vegetables and flavour, which wouldn't be eated by her. although DD loved it. I then discovered that when DD visited her the evening meals consisted of chips, cheese and chocolate Penguin biscuits and this was her friend's normal diet. I gave up and when she came I served chips cheese and chocolate biscuits.
I don't know about supposed vegan manufactured foods, never looked.
Apart from trying quorn and using it rarely - and the beef burger alternative which is very tasty but high in calories and fat - though lower than beef in cost and calories - I'm about vegetables. Nothing ever manufactured, but that was same when we ate meat.
I'd not paint vegans with the brush you're seeing where you shop.
But I'd never buy beef, for us, either. Too much downside, too bad for environment. I buy for our daughters and theirs, because they like beef. jambon, pork meat, fish and poultry. I draw my line at bacon.