simplism

noun

1. (countable, uncountable)The trait of oversimplifying things by ignoring complexity and complications.

   “Their need for simplicity is met by politicians offering “simplism”: the ideology of simple answers for complex problems.”

2. (countable, uncountable)An instance of a brief or reductive depiction that neglects the full nuance and complexity of a concept or issue, and that omits or overlooks important details.

   “1848 Charles Julius Hempel The True Organization of the New Church The error into which Fourier's disciples are occasionally falling, is one which Fourier condemns in the most explicit and absolute terms; it is the error which Fourier designates by the term "simplism". Because a social reform is needful, therefore they argue, that is the only thing needful, forgetting that the development of humanity is of a compound, and not simple nature.”