Totally agree. Usually to achieve a KISS state you need a few iterations and refactors to understand clearly the perimeter, objectives, constraints, etc. It is dedication, constant feedback and utmost important: egoless engineering. Usually it pays off when you refactor something by removing hundreds or thousands of LoC and your whole test suite is still all green
Think different. Simple is harder than complex, which means you'll need to use your creativity.
The KISS people tend to think simplicity is the easy route. The acronym basically says so. But it’s the other way around.