It also makes it a lot harder to bypass the login screen, even if someone takes the whole laptop. In case you weren't aware, the ability to do a passwordless u

It also makes it a lot harder to bypass the login screen, even if someone takes the whole laptop. In case you weren't aware, the ability to do a passwordless unseal can be tied to not tampering with the bootchain. It's not entirely bulletproof, but it's beyond the abilities of most thieves to bypass this (versus just popping the drive in another machine).