I know this is besides the point, but still kinda relevant:
Even on Win11 it's still possible to do the old utilman (or other suitable module) replacement hack from Windows repair (trigger by interrupting boot), from there you can change account passwords at will.
I think Windows repair prompts for an admin login and the bitlocker key before allowing you to proceed. Assuming the windows install is intact enough to read the security sam.
Even on Win11 it's still possible to do the old utilman (or other suitable module) replacement hack from Windows repair (trigger by interrupting boot), from there you can change account passwords at will.