This is problematic even for people who don't mind linking to an online Microsoft account (I'm one of them). There is a long-standing Windows bug where local user directory names are created using a truncated version of the online account's name. This is rarely what you want. The work-around has long been to create an offline account first to name your own local directory, then convert it to an online account.
This will break that work-around, and this is universally bad.
I've just resigned myself to the fact that the last letter of name is cut off. Seems super silly since it's capable of showing the full name everywhere else.
Maybe some MS dev hasn't cottoned on to the string count starts at [0] lol
This will break that work-around, and this is universally bad.