it's a deliberate obfuscation of the problem of physical security
if your computer is physically accessible to strangers, then they can tamper with it, and this is what the whole thing is for... but a simple fucking encryption key and bios password will do this for you, and even if they flip the bios battery out physically the encryption stops them from seeing your stuff... and they can do this even with UEFI, so it's a total sham, the only security for physical access is a fucking encryption key, and that means a strong password and not a physical token
if your computer is behind locked doors and should be physically secure none of this is needed and anyway, only full disk encryption actually works, assuming a decent fucking password