I think it's pretty stupid to consider any consumer device to be secure enough. I did hear on HN some time before that interview that some USB device can be used to bypass the lock screen, which was the basis for my worrying. Now, some are saying in this thread that it is possible (or at least was at the time) while others saying that it is not (and was not) -- Even an educated sample of tech folks cannot make up their mind, so there is (or at least was) room for justified concern... no?
I think the consensus is that it's possible, but expensive. So like, nation-state espionage yes, corporate espionage no. But anyone who actually knows anything won't be talking about it on HN ;)