But I do also see the benefit of a declarative system for most cases. Adaptive layouts are hard to do with imperative code, and very easily lead to e.g. infinite loops, so it's nice to work with a declarative system that guarantees a stable layout. That said, CSS is far from an ideal such system with so much ad-hoc and legacy baggage.
Well, as far as I at least understand it, the argument is that by using JS for this, you are indeed telling the computer what you want, you're just doing it by telling the computer it by telling it exactly how to do it. In contrast, in CSS, you're telling the computer what you want by… telling it what you want, and letting the browser engine worry about the how.
CSS isn't perfect, but it certainly works nicely for declaring layouts most of the time. It's of course alsp easy to get wrong, but doing all of the layout logic manually doesn't seem like a proper solution.
