What is HN's obsession with JS frameworks? There's 4 big ones (React, Vue, Angular, Ember (arguable if Ember still counts)) that have been in use for the better part of 2 decades at this point. Sure there's plenty of smaller ones like Svelte cropping up, but most places just use one of these 4 for the most part.
Anyone who's ever tried to build anything big with vanilla JS knows why these frameworks exist in the first place. The ones like Vue or Svelte aren't even really that complex to grok anyways, despite all the hyperbole about them.