Smarter? Maybe, maybe not. Able to articulate a basic reason to rewrite or not? Most of us here probably are, yet Musk chose the least compelling route, ad hominem attacks.

I don't think it takes a genius software engineer to be able to give a high level description of the stack they are in charge of.

I mean, yes, I would assume a lot of people here are smarter than Elon Musk, and certainly far more familiar with software engineering.