I'd argue most of the vegetarian/vegan food is going to be cooked alongside meat, especially burgers. You're not getting a special griddle when it comes to prep. The closest I've seen is cooking the vegetarian food earlier and putting it in a steamer, but who wants anything that was prepared 6 hours ago let alone steamed?.

I guess I just don't understand the whole concept. I went to vegan expo thing way back in the day at UCLA and nearly every vendor was pretty much "our fake meat" which was odd because I assumed they didn't like meat, yet clearly do. Very confusing.

Veganism is an ethical position, not a diet. It to reduce the harm to animals we cause as much as feasible and possible. A veggie burger cooked need to a beef one doesn't harm any animal nor does it add demand for animal products. Ethically there's nothing really wrong with it.

Same with the last, I'm vegan because I can live fine while lowering the harm I do to animals, but meat and dairy products do taste good.

You'd be pleasantly surprised in Europe, just checked LA on happycow and shows 828 vegan-friendly options to dine, whilst looking at Vienna, a comparatively very small city showed 818 options.