Right on that page is an example of "Keep it Simple" without the "Stupid". A charitable reading of parent's comment wouldn't have thought the commenter was labeling anyone stupid with the appeal to keep things simple.
You can deliberately exclude the word "Stupid" from the expression, but that doesn't change what is being said.
> Whatever happened to KIS(S)?
Interesting question, I wonder how the entire ecosystem forgot this one simple trick? What is it about their brains that causes them to create all these solutions that are apparently worse than the problem?
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Tools can solve important problems "and" increase the complexity to point where they create other problems which makes the trade-off untenable.