I'm curious as to where you live. I'm in SF, and a substantial number of my friends and acquaintances use "non-GMO" as a synonym for "healthier," in the same way some use "organic". Do you mean the more militant anti-GMO crowd? If so, I guess you're right that I've never met anyone who cares more than "I just think non-GMO is better and do my best to make choices supporting them."