Good point, we should commend genuinely novel efforts towards making baseline computation more efficient, like Apple has done as you say. Particularly in light of recent x86 development which seems to be "shove as many cores as possible on a die and heat your apartment while your power supply combusts" (meanwhile the software gets less efficient by the day, but that's another thing altogether...). ANY DAY of the week I will take a compute platform that's no-bs no-bells-and-whistles simply more efficient without the manufacturer trying to blow smoke up our asses.