An M1 Mac sees and mounts a discrete GPU connected over Thunderbolt. It just doesn't have an ARM flavored driver for it.
Which seems to align just fine with Apple's ongoing efforts to get rid of all the kernel mode drivers and replace them with user mode drivers over time.
I don't think you should read too much into their entry level chip not supporting external GPUs in the first generation.
Which seems to align just fine with Apple's ongoing efforts to get rid of all the kernel mode drivers and replace them with user mode drivers over time.
I don't think you should read too much into their entry level chip not supporting external GPUs in the first generation.