You must have been misinformed, they tear down forests to grow soya to use as feedstock (mostly for beef). Nothing to do with fake meat tofu, quite the opposite actually.
> Animal agriculture is around 15% of global emissions
The majority of which is methane, which only has a 7-12 year life. Which means — unless for some reason you started eating way more animals than you did yesterday — that your emissions today simply replace your emissions from 12 years ago. In other words, it is a stable system, unlike carbon, which basically sticks around forever.