This exists in many parts of the world. And is usually reserved for the ultra wealthy, especially if you want it to be near a big city. One famous example is Karuizawa.
Readable code is code that has empathy for the reader and tries to minimize the cognitive load of interpreting it. That's one of the goals of abstraction layers and design patterns.
Yes, it's all subjective, and depends on the reader's expertise and existing familiarity with the codebase. But arguing that code readability isn't at thing, because it's subjective, is an absurd take. Would you claim that Joyce's Ulysses is equally readable as Seuss's The Cat in the Hat?
One of the reasons why they can do unified memory efficiently is because the CPU/GPU is a single SoC. If you separate them, you end up with a normal PC architecture, with memory having to go through a PCIe bus. This is possible to do with reasonable latency and bandwidth (thanks to CXL), but we haven't seen that in consumer hardware. Even in server space I think only MI300 supports CXL, and even then I don't think it's something AMD particularity promotes.
Personally I think Strix Halo workstations may come with expendable memory, storage and free PCIe slots. But then you have to deal with ROCm...