Look, arguing back is not helping your cause. You want people to stop supporting these industries, I understand.
But you’re presenting all vegans in a bad light. Give out some facts, say hey Eating meat does this to the environment etc and there will be many people who may consider eating it less or maybe not at all etc. But carrying on like this is not going to help your cause at all, in fact it may even put people off veganism and vegetarianism because they view you as being a representation of (lots of) vegans. Cop on.