exaggerated simplicity, as in concentrating on a single aspect or factor of a problem or situation while disregarding others; oversimplification: The senator is given to simplism in dealing with international issues.
an act or instance of oversimplifying: to offer simplisms instead of analyses.
Origin of simplism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Online Etymology Dictionary, © 2010 Douglas Harper