We have to do it. Some of us have to do it in different ways. Doing small things where you can is all well and good but literally none of us are making a single impact in capitalism by making different choices about how we're forced to participate in it. Focus on tearing it down together rather than picking apart individual choices because those individual choices still result in participating in capitalism.
Switching to not eating meat will not cause you to drop a lot of weight.
Meat isn't what causes people to gain weight, carbs do. And carbs are vegan.
I have absolutely zero desire to talk to you, as you clearly already know. Go away.