I am not sure if you watched the video - but the improvements in the 2 areas that he points out (stop single core boosting to tdp and turn off more unused SoC I

I am not sure if you watched the video - but the improvements in the 2 areas that he points out (stop single core boosting to tdp and turn off more unused SoC I/O components on idle) already gets x86 very close to M1 power consumption.