zlacker

I didn’t read that as discouraging people from using Qubes, but rather as a reminder than Qubes, like every OS, can’t protect you if your hardware is compromised.

>>colejo+(OP)
That's a trivial conclusion and not related to Qubes OS. Every operating system somehow relies on hardware protection features.

If the ring architecture of processor can be circumvented, the protection of privileged code (kernel) is harmed. If you can circumvent the MMU's memory protection, the protection of privileged code is harmed. And if side channel attacks like Spectre and Meltdown are circumventing protecting features, the protection of sensitive data is harmed.

Every systems which has claims on security relies on explicit (that would be better) or implicit assumptions. And every operating systems I know of, at least implicitly assumes that the hardware isn't compromised.