[kdmccormick]

Except that those special cases often land on the same groups of people. Accented characters, multiple given names, multiple surnames... these are all common for people whose ancestry isn't the US or Western Europe. No driver's license, no permanent address, no social security card... these are all common for poor people.

It's great that admins can fix the special cases, but the fact that they're special cases at all makes life harder for assumption-breakers. An action that took 10 minutes on the Web for Jim Smith living at 11 Place Road might be 3 hours on the phone for Hector Marίa Gonzalez López whose address is a P.O. box. Those hours add up and can really make folks' life hard for no good reason.

Do your users a favor and make as few assumptions about them as possible!

[Muromec]

You don't even have to be that far off from the baseline normie to confuse a tech-infested bureaucracy. Being registered at the same address as your parents or having a name ending in a vowel already significantly increases entropy levels.