I recently railed against having to learn more than one frontend framework. I've coded UIs with React since the alpha and absolutely refuse to master Vue or Svelte. They're not even a heavy lift to learn or anything. My problem with them is that I don't want to have to learn yet another non-standard thing. And don't even get me started with Typescript 😆. I'm not saying we shouldn't use 3rd-party libraries (or even frameworks), but we should be lean about it and keep solutions as pure as possible.