Thanks! Just to make sure I am getting this (depressing) answer right, I think you are saying:
a) I can 2Fa w/ a device and MS account. But that will use phone-based authentication, so will lock me out unless I have my phone. Also it will require me to 2Fa my MS account all the time, not just for access to my laptop. I don't always have my phone and I want to be able to access my laptop without it. So that is a nonstarter. (Obviously I could enable an alternate means of access, but that would just be a security hole.)
2) I can just use a long PIN, stored in TPM, instead of a MS account w. 2FA. Obviously that's only 1FA
3) I can just use Windows Hello, stored in TPM, instead of a MS account w. 2FA. Obviously that's only 1FA
4) I cannot even force it to require both Windows Hello and MS account PW when it wakes from sleep.
Am I getting your answer right?