It turns out to be difficult to avoid buying soybeans grown on deforested land. I think the demand for soybeans is so high that any beans that are grown will be bought by someone.

The demand for soybeans is high because people are eating so much meat. Indeed, a large fraction of Americans eat so much meat that it is dangerous for their health. It also fuels global heating, through cattle-generated methane as well as through deforestation. Perhaps the real solution is to tax meat so much that people won't eat so much meat.