I think he's wrong about people not having loyalty to meat. There is a ton of literal hatred for veganism and vegetarians in this world. Think of the practically cult-like following bacon has. I recall a thread some years ago on Reddit's r/fitness with someone asking for vegan protein sources due to certain allergies or other health restrictions and it was spammed with dozens of comments along the lines of "bacon" an…
It's not that much hatred for veganism as rejection for something that is different in general.
The first vegans came mainly from outcast communities, like hippies, or pet lovers.
There is also the problem of feeling they are being judged: you'll often see somebody defensively saying "I could never be a vegan because of so and so" while nobody ever asked.
At last, we still live in a society with a macho touch, and meat is associated with being manly.
So really it's not about veganism, but about deeper issues from our society.
The fact there are more veggies and vegan today is a good news though: it means the society is becomming more tolerant, more open minded, and have the technology to support a less destructive lifestyle.
Like with every deep change in society, the best we can do is to help everybody get along and support each others. Cooking wars are just a symptom, and not the proper battle field.