Too little too late

Truely paranoid people (like me) wouldn't have trusted any third party device in the first place.
Funny you are saying this because you are already using third party devices like your computer and smartphone that all have closed source hardware components (some even software).
The difference is how you use it: I
don't trust my smartphone, but I use it anyway and make sure I don't risk too much. Hardware wallets were supposed to replace cold storage, which now turns out to be a lie.
Of course, even with cold wallets I need to trust software, but it's a lot easier to be absolutely sure my private keys can't be sent somewhere.
So trusting computer that has much bigger attack vectors than open source hardware wallet.... that doesn't make any sense to me
I never said I trust my computer.