Hm... What if someone get holds of your Trezor without your knowledge, installs malicious firmware that saves your passphrase, returns it to you, then steals it again after you have used it, and downloads the pasphrase? Or whaterver?
your contortions are getting a little contrived ... and a bit funny too.
You don't build confidence on a system by having it examined only by people who
want it to be declared safe.
Wait a minute. I, for one, appreciate any and all eyes on this. So far most of his questions have been totally reasonable, appreciated and answered. Some of them have been redundant but that is OK. This is billed as the safest or at least one of the safest ways to store you BTC. So far I have not seen any holes in the system but it does not hurt to question the system - and might uncover something.
The camera looking over your shoulder stuff is, of course, over the top as that would be detrimental to
any system. But firmware upgrades do need to be questioned and all questions need to be addressed.