The microcontrollers and secure enclaves in all the hardware wallets are general purpose computing platforms. They can run arbitrary code and are popular products specifically because of their versatility.

Conceivably the “firmware” for these devices could even become as complex as Raspberry Pi OS. And some of them already have quite complex software.

Don’t get me wrong, I prefer a hardware wallet, but I think we should stick to more concrete evaluations of security.

RPi is interesting from a security perspective because of its ubiquity. It’s an all in one system with very few hardware configurations and well studied. There may not be a more studied system in existence.