@Yoruka @djsumdog @meowski @Zergling_man It came to me in a dream.

All Android devices are dependent on proprietary software running on a mobile chipset and also for proprietary drivers for the peripherals like the touchscreen.

The only distribution that has bothered to replace proprietary drivers with free replacements is Replicant; https://replicant.us/

People love claiming that IOMMU solves everything, but really the mobile chipset starts up first and then decides to enable IOMMU or not on most devices.