Well that sure was interesting. I expect the ARM Macs to have far less "grunt", which will be a first for Apple. The PowerPC -> Intel move which coincided with the previous Rosetta had a move to a more powerful CPU on its side. This time around, Apple is trading raw performance for efficiency, so I predict Rosetta 2 will be significantly slower than Rosetta 1, to the point that a lot of apps will be considered unusable.
I am developing on ARM platforms at the moment and I am trying to set up a more efficient workflow using cross-compilation on a different PC because the build time on ARM is miserable. I wonder if this will make "cloud build" workflows more popular?