Oh noes! Teh GOM potaytoes will mutate your childrens!
People that are anti-GMO, anti-vaxxers, etc., block-out any evidence contrary to their pseudo-religious beliefs. I've long ago given up efforts to engage any in debate. If an associate/co-worker/whatever starts going off about vaccines, GMO crops, moon landing, 9/11, I just nod along in a faux-interested manner and extract myself from the conversation expeditiously, it produces the least amount of stress.
Agreed on radiating fruit. Wish they'd do it more with meat as well.