But the point is that modern/popular frameworks picked the low hanging fruit of abstraction, we had several iteration cycles over two+ decades of mainstream web

But the point is that modern/popular frameworks picked the low hanging fruit of abstraction, we had several iteration cycles over two+ decades of mainstream web tech. The landscape (browser capabilities, backend stacks) has settled over last ten years. We even had time to standardize on things somewhat. Building new abstractions at this point is almost always the wrong move. This is one of the points that LLMs will improve in software dev - they will kill the framework churn because they will work best on stuff already in training data.