I avoid the cognitive dissonance of consumption by explicitly not thinking of the environmental and societal impact my purchases make. What is false about the statement, "consumer's don't think, they consume"?
There exists at least one consumer/thinker.
IMO, that statement doesn't become "false" by the existence of an amputee or someone wheelchair-bound.
Similarly, I believe the "consumers..." thought has relevance and information content even With awareness that there exists a particularly thoughtful consumer.
For a corporation like Amazon or Walmart to survive they only need the masses. The small minority of conscious consumers don't affect them... and even if they do, it's not as if lots of conscious consumers don't buy from Amazon and Walmart anyway, despite the fact that they might disagree with their business practices or business philosophy. Consumers in general in America and Europe don't care that much about these things... and even if they do massive corporations can buy other corporations and sell to them through that brand while still furthering their own business philosophy, business practices: example Whole Foods.