Hijacking the user's scroll, rendering the entire website content on JS at client-side (although the emergence of SSR has made this less of an issue. Who knew that not rendering all the things on the client device makes things better, I'm shocked…) and SPAs more generally (GitHub for example is so jank and annoyingly slow nowadays, it's just irritating), doing things like buttons and links with a `<div>` with an `onClick` instead of using the appropriate markup, et cetera.
Of course, many of these things are exactly opposite to the actual best web development practices. But why, then, is this shite so prevalent‽ It's also bad for things like accessibility, with screen-reader users and such sometimes struggling majorly because of myriads of badly developed web applications. Meanwhile a standard HTML document, with some CSS and maybe some JS for progressive enhancement just works. Of course, I know that many use cases require far more interactivity and dynamism than that, but is it such a big burden to not make the user experience worse with bollocks like reinventing browser scrolling?