I read it as that Integrity and Confidentiality was the only factors here, so USBKill-style stuff (Availability) would just mean the machine was replaced, Integ

I read it as that Integrity and Confidentiality was the only factors here, so USBKill-style stuff (Availability) would just mean the machine was replaced, Integrity should handled by the boot process and Confidentiality should be handled by the embedded OS itself.