You have to go back to the ancient Greeks to come up with an adequate word to describe a person who thinks one can buy truth for the price of a bag of M&Ms. Jeepers indeed!
That word would be: anoia — mindlessness. And while we're at it, let's hook it up to its famous cognate (from the French), anomie — utter depletion of spirit....
Thank you so much for sharing your insights, dearest sister in Christ!