The DAME needs to be sure they are updating the record for the correct person. A photo attached to that record seems like a useful check.
As you say, multiple databases cause additional problems, particularly for foreign names that may not follow the same pattern as English names. If Clinton McKenzie presents an identity document for:
Clinton MacKenzie
McKenzie, Clinton
Clinton Mc Kenzie
Mc, Clinton Kenzie
Clinton Kenzie, Mc
Kenzie, Mc, Clinton
... just to pick some patterns that might be applied to a foreign name, would you accept it? A photo allows you to be more sure and more importantly, reduce mistakes.
https://www.kalzumeus.com/2010/06/17...e-about-names/