You are speaking truth, going vegan has one of the highest possible personal impacts. Eating animals is one of the main reasons for the massive land use, since we need it manly to feed animals, therefore it is reducing biodiversity.

Personaly, I don’t think the second part of your comment is sensible. Beeing aggressiv and making accusations (even if warented) will not change peoples minds but make them defend themself. But again, that’s just my view.

(edit to reword a sentence)