While that may be tragic, it still is the intentional effect and hardly a mistake. Apple focusing on its $250B iPhone market over its < $50B Mac market very much makes sense. When they removed 32 bit support we might have guessed at Apple Silicon on the desktop, and lo and behold that did come to pass. The Intel to ARM transition was much smoother than the PowerPC to Intel move in part because of 2 vs 4 versions in the Universal Binaries. I am going to go out on a limb here and say that Apple was also aware of ARMs forthcoming complete removal of AArch32.