Oh, I meant that products might be compromised in a way that renders interdiction redundant. Just a hunch though–nothing substantial to base this on.
The same reasoning might apply to Qubes, but I think it’s much harder to compromise an open-source OS than it is to install a microscopic piece of hardware into a system (something the Bloomberg piece on China inserting hardware backdoors into servers showed).
P.S. Here’s a presentation on Chrome OS verified boot (dated 2020, which is much more updated than the 2013 slides linked earlier).