How would the stranger know your MacBook's password. Unless it was a very simple password, I don't think this option is very likely.
I have done exactly that on an M1 Air I purchased, and that the person who sold it to me bought it new.
It took me a while to arrive at the terminal in recovery mode.
How would the stranger know your MacBook's password. Unless it was a very simple password, I don't think this option is very likely.