My Microsoft Account email is "contact@<my-domain-name>". If I set up a new Windows 11 computer using this account, Windows picks the first 4 letters of my email address and sets that as the username. So my username becomes "conta", and the path to my user directory becomes "C:\Users\conta".
I know this is a really small thing, but I find it incredibly irritating. I can't be typing that into the terminal all day long! It's not the end of the world, but it speaks to a lack of polish and care across the whole product, not to mention a disrespect for their users' intelligence.
I'm not a Windows user—I only use it for gaming—so I don't really know how to get around this issue. Maybe there's a secret keycombo I can press during install? Or some unrelated checkbox that I can toggle that will do the magic? I just know that I login via my iCloud account on all my Macs, and Apple has always allowed me to choose my own username and home directory.
I don't think this is high on their list of issues to fix so I'm not very hopeful that this will ever get addressed. Maybe I should just change my legal name to Conta?
I don't quite understand what you are saying here. If you're talking about setting up an account to use the system, it's the same idea as setting up a local account on Windows.
If you're talking about online accounts, I believe you are referring to a convenience feature offered during setup. Ironically, it was put there to guide people who are coming to Linux from Windows.