Overengineering

https://en.wikipedia.org/wiki/Overengineering

Overengineering (or over-engineering) is the designing of a product to be more robust or complicated than is necessary for its application, either (charitably) to ensure sufficient factor of safety, sufficient functionality, or because of design errors. Overengineering can be desirable when safety or performance on a particular criterion is critical, or when extremely broad functionality is required, but it is generally criticized from the point of view of value engineering as wasteful. As a design philosophy, such overcomplexity is the opposite of the less is more school of thought (and hence a violation of the KISS principle and parsimony).

https://en.wikipedia.org/wiki/KISS_principle

KISS is an acronym for "Keep it simple, stupid" as a design principle noted by the U.S. Navy in 1960.^[1][2] The KISS principle states that most systems work best if they are kept simple rather than made complicated; therefore simplicity should be a key goal in design and unnecessary complexity should be avoided. The phrase has been associated with aircraft engineer Kelly Johnson (1910–1990).^[3] The term "KISS principle" was in popular use by 1970.^[4] Variations on the phrase include "Keep it Simple, Silly", "keep it short and simple", "keep it simple and straightforward"^[5] and "keep it small and simple".^[6]