Leading up to and for a short time after the M-series announcement, the resulting "locking down" of the Mac was a commonly voiced suspicion/concern, to the poin

Leading up to and for a short time after the M-series announcement, the resulting "locking down" of the Mac was a commonly voiced suspicion/concern, to the point that to this day, many tech-adjacent online discussion participants who don't follow Apple think that M-series Macs have the same boot restrictions as iOS devices.