This is why "HTML/CSS/JS isn't supposed to be used like that" is a weak argument. Browser features we take for granted now grew from developers popularising hac

This is why "HTML/CSS/JS isn't supposed to be used like that" is a weak argument. Browser features we take for granted now grew from developers popularising hacks that pushed the boundaries (usually in ways people complained about at the time) until official support was gradually built into the browser e.g. AJAX, responsive layouts, complex/flex/grid layouts, reactivity with proxies, JavaScript modules, desktop-like web UIs in general. TypeScript, JSX, Tailwind and bundlers come to mind of current trends that get some strong negative reactions but could become more mainstream later.