Something like 75% of all non-meat food grown in the US is fed to animals for later eating. When you complain about soy destroying forests, you are complaining about meat consumption:
> Just over 70 percent of the soybeans grown in the United States are used for animal feed, with poultry being the number one livestock sector consuming soybeans, followed by hogs, dairy, beef and aquaculture. The second largest market for U.S. soybeans is for production of foods for human consumption, like salad oil or frying oil, which uses about 15 percent of U.S. soybeans. A distant third market for soybeans is biodiesel, using only about 5 percent of the U.S. soybean crop. In 2013, soybean exports reached record highs, exporting 43 million metric tons to overseas markets. China remains the largest export market for U.S. soybeans.
https://www.usda.gov/sites/default/files/documents/coexisten...
You'll find this same thing over and over again when discussing clearing land for crop growth. The vast majority of it is to support meat production. Going vegan is probably the number one thing you can do to fight climate change and pollution in general, as an individual. Especially since switching would eliminate vast amounts of farming, and the associated chemicals and water loss. edit: and deforestation.
It is not a small thing, not at all, and to diminish it is to deny the massive sea of change that is required to actually fight climate change with 7B people on the planet.
Sure, there is a lot of cultural blowback against veganism, but I think it is manufactured via marketing, just like the anemic belief in climate change in the United States.