I'm not lying - https://i.imgur.com/snOLtqJ.jpeg
No idea how they associated it - possibly taken from my chrome login on previous install and then tied it with some combination of licence key, hardware id and IP.
I certainly never gave it to MS nor did I request the reset, nor did I log in to gmail on the new install.
Sure it could be random but come on, this is the first time I got it and it was just after I installed W11.