If you think these hardware cryptographic security measures are actually about customer security and not vendor control, I have printers to sell you that reject refilled ink cartridges and farm tractors you aren't allowed to repair.
https://www.servethehome.com/amd-psb-vendor-locks-epyc-cpus-for-enhanced-security-at-a-cost/
@kyle It's a revenue security feature.
@kyle how long until the “custom and secure” OS on the A5 running the PSB is owned and the whole house of cards comes tumbling down?