I agree with everything but > We regularly see developers talking about optimising js loops, dom updates etc in products that are little more than blogs with a

I agree with everything but > We regularly see developers talking about optimising js loops, dom updates etc in products that are little more than blogs with a few interactive elements. In which I see the opposite. Developers don't optimize because "DevEx" is a feature of a codebase, but performance is treated as an afterthought.