Hey Hunter,
Honey isn't actually vegan, because it's made by bees, and therefore is considered by some to be an animal product. For people who choose veganism because they want to eat without harming or enslaving animals, honey is off limits. Tynan eliminated animal products from his diet for the health benefits only, as he has zero moral problem with eating a dead chicken or making a cow live as a little milk factory or whatever.
Honey is distinct from every other food that vegans exclude from their diets in that it isn't the flesh, egg or milk of an animal. It's basically just a simple sugar. Nutritionally, the only reason to limit the amount of honey you consume is because it's fairly high glycemic.
Hope that helps!