I am torn, whenever I hear the rumors about the ARM Macs. On the one side, I am terribly excited from a technology perspective. I grew up with homecomputers in the 80ies, and in the 90ies, all Unix-workstations had several different, non-x86 architectures. So any disruption of the x86-monoculture is interesting. Also, looking at the performance of the iPhone and iPad, I think Apple has the potential to create some great hardware. It would also give them more flexibility to roll out new features.
On the other side, such a transition always is painfull. A lot of software needs to be rebuilt, and even more legacy software gets killed, as it is not ported to the new platform. Though Catalina already did a lot of that, and that might not be a coincidence, if you think about it. Catalina might be intentionally restrictive to ease the transition to another architecture.
Also, a lot of Mac users are running VMs on their machines. Running Windows and Linux VMs on your Mac was one big benefit of the switch to Intel. I myself use a Linux VM for my professional work on a MB Pro. And that VM needs to be able to run x86 software. So it remains to be seen, how Apple deals with the MB Pro (and of course the Mac Pro).
On the other side, such a transition always is painfull. A lot of software needs to be rebuilt, and even more legacy software gets killed, as it is not ported to the new platform. Though Catalina already did a lot of that, and that might not be a coincidence, if you think about it. Catalina might be intentionally restrictive to ease the transition to another architecture.
Also, a lot of Mac users are running VMs on their machines. Running Windows and Linux VMs on your Mac was one big benefit of the switch to Intel. I myself use a Linux VM for my professional work on a MB Pro. And that VM needs to be able to run x86 software. So it remains to be seen, how Apple deals with the MB Pro (and of course the Mac Pro).