You're right, simplicity is undervalued.
The problem is, simplicity is often not a possibility. The problems we're solving are complex, not simple. Simple solutions to complex problems are to be sought after and cherished, but they are also incredibly difficult and idealistic.
Instead, we value pragmatism. We favor structure which simplifies, rather than structure that is simple in itself. We do this because it increases our productivity in solving highly complex problems; problems that simpler foundations would not support or would not assist.
Angular simplifies, hands down. It does this by swallowing the complexity into itself, and dealing with it in some rather intelligent ways so you don't have to. This, above all, you need to understand to use it effectively. Some complexity leaks; a great deal of it is contained and managed well.
You may love a handsaw and hammer and nails for their simplicity and clarity, and there is merit to that, but they can only build so much so quickly.
Angular is not a combination of those simple tools: it is more like a 3D printer, enabling you to build components of things and use them to make final products as fast as you can dream them up. It knows what it is, and so should you. Please excuse the lofty analogy.