Sounds like you’re just more familiar with Linux and that’s fine

While it is partly true, I can't deny I spent the last 15years on linux, I have my fair amount of deal with windows in a professional setup, I can't totally accept this response then, hence the word partly true :P.

Now, explain me how any familiarity with Windows can help when a vanilla installation for windows 10 pro, used for two specific application (nothing cloudy), no game, almost offline, etc... How this system decides, randomly to not allow me to literally login in, looping forever before giving prompt, or pretend there is issue with my PIN and or my profile although I use plain passphrase and my account is local and literally nothing has changed system wise since the last session! I have disabled all the auto update shit everywhere (the obvious one and the one I know about) and no updates in between.

You could say I might no know this particular register bit field. Probably but then, we are not in the easy/just works view.