I'm a server-side developer by trade, but there's something REALLY neat about being able to build a useful interactive thing as static HTML+JavaScript and know that it will effectively never stop working and is entirely self-contained.
A tell-tale sign is that even fast moving LLMs have issues keeping up with frameworks; they already changed so when you npx bla@latest create my-coolness, the LLM already is going to do things 'wrong' or different than intended as it simply doesn't know everything change yet again for no reason anyone but the most hardcore devs care about. The rest of us just want to get our work done and have it compile 3 weeks from now still.
I find Mithril simple enough to be low maintenance for Single Page Applications. We still use a version one of it on a project launched about ten years ago -- although I use version two for later things. And you can use it from plain JavaScript with no compile step. https://mithril.js.org
I also find Tachyons or similar Atomic CSS libraries to also simplify CSS issues in a more maintainable way -- also with no compile step. From 2017: https://css-tricks.com/growing-popularity-atomic-css/