I disagree... I know some vegan hambeasts that I'm fairly certain stick to vegan foods. It's just that they eat too much of it. Of course, I do believe a lot of the supposedly "vegan" fats are lying to try to block people from saying they eat crappy ("but I'm vegan, it's healthy!"), but it's not 100% of them. It can be easy to lose weight on a vegan diet if you stick to whole foods and veggies, but there's also plenty of cakes/cookies/donuts/candy/pizza/other high-calorie stuff that's vegan, so it's easy to eat vegan and still consume way too many calories. So easy that even a lazy ham can do it.