What would realistically be the point of that? Doest that defeat the purpose of "locking" a bootloader, if it can be unlocked with a hardware switch?

I mostly dislike operating devices with unlocked bootloaders because the boot process can then possibly be changed without my knowledge. Ensuring the boot process cannot change without a massive error being thrown helps ensure security of my device. However, it would be nice to easily disable the bootloader lock, make the changes I want, and then just hit a switch and it commits the latest changes. If anything changes in the boot process from the first way it experienced after the physical toggle, refuse to boot until I physically do something about it.

It could protect you against a rootkit.

Hi, I have firmware rootkits (I think they hide on hdds, nics, etc) So if you can help me I could pay you (a little) with criptocurrencies. Email me please nais.thc at gmail.com

or even better : a bios rom