Because you usually lead with your best argument and when your first argument is complete non-sense what hope does rest of your argument have?
Also there is no "meat eaters culture war", but vegas sure try to spark a war. Vegas used to try sell the health benefits of vegan life style, but that has been disproven so many times that now they (or you?) only have the moral angle to work with.
You can try to twist this as much as you like, but the fact remains that (so far) no vegan product has been able to compete with meat in taste or texture. I simply do not care where the food comes from. Even if factory farming was outlawed today it would just mean I would pay more for my meat or if I had to slaughter it myself I would need to learn that skill, I am not going to give up on delicious meat products just because you can't sleep at night.
There are so many other greater injustices in the world that caring about factory farming makes you kind of an asshole. But if you can show me a meat substitute that tastes and feels like meat in my mouth then I will switch to vegan in a heartbeat, because then your moral argument actually makes sense.