One very slight benefit I see is (better) standardization of username generation. If everybody has their own method of generating usernames (eg long string of n

One very slight benefit I see is (better) standardization of username generation. If everybody has their own method of generating usernames (eg long string of numbers vs 2 random words), then it's possible to differentiate usernames based on the style. Now that generation is automated via lastpass or bitwarden, there are two standard styles and makes it harder to fingerprint users based on it