Angular and React were a response to the problem of abstraction-less frontends: spaghetti jQuery, piled ten miles high. I appreciate the concern for over-abstraction introducing unnecessary complexity, but there's got to be a point on the continuum of spaghetti-jquery to react+redux+node_modules that's the sweet spot. If you're choiceful in what tools you use, you can have that in 2021. It doesn't have to be overly complex (though you certainly can make it that way).

By building apps using 100% client-side rendering with GraphQL and Rest APIs, I can use tools like Storybook to build a user interface that are easy to automate testing and ultimately, and consistently, ship enterprise-grade UIs. All my apps are behind auth walls. If need SSR, there's tools like Next.js.