Haha! Love that film. I think the "vegan" OP was talking about was a bit of a numpty, tbh. Reminds me of a girl I knew back at school who believed that we should try to get all animals to become vegetarian (putting lions in a zoo on a veggie diet, for example...).
My wife works a a Veterinary Clinic and 2-3 time a year she has someone bring in a sick cat, when she tells them that it looks like malnutrition the response is "But we have the cat on a very healthy all natural vegan diet!!" Yep, Malnutrition, the can't isn't getting all the amino acids it needs to live.
I do have one question for any Vegan or Vegetarians to whom it might apply. I get the fact that someone has made the choice to not eat meat, the reasons may vary but the end result is the same. I am confused by products like Tofu-Burgers, Tofurckey, meatless Bacon and many others. I know that not every one eats this stuff but for those that do I've always wondered why? If you decided not to eat meat, why eat fake meat? To some extent I can see the point of "wanting to fit in" but if you are with other veggies then they understand and if you are with meaties then you are still eating something different.