That doesn't seem extreme to me, as I generally feel similarly. If you (or other readers) are genuinely interested in using Chapel with Metal, please open an issue on our GitHub repository capturing your request, as that would be valuable to us.

Just to make sure it didn’t get lost, note that it is possible to develop GPU code in Chapel on a MacBook using the cpu-as-device mode Engin mentions above, and then deploy it on NVIDIA GPUs on production systems by recompiling. This is how I develop/debug GPU computations in Chapel.