"General purpose CPUs are going to stay to become the little brain that orchestrates GPUs."
If that was going to happen, it would have happened.
CPUs are genuinely good at what they do, and "what they do" is a lot of tasks that GPUs are actually terrible at. If all we had were GPUs in the world and someone invented a CPU, we'd hail them as a genius. A lot of people seem to think that GPUs are just "better", just ambiently better at everything, but that's lightyears from the truth. They are quite spectacularly terrible at a lot of very common tasks. There's many very good reasons that GPUs are still treated as accelerators for the CPUs and not vice versa.
If that was going to happen, it would have happened.
CPUs are genuinely good at what they do, and "what they do" is a lot of tasks that GPUs are actually terrible at. If all we had were GPUs in the world and someone invented a CPU, we'd hail them as a genius. A lot of people seem to think that GPUs are just "better", just ambiently better at everything, but that's lightyears from the truth. They are quite spectacularly terrible at a lot of very common tasks. There's many very good reasons that GPUs are still treated as accelerators for the CPUs and not vice versa.