A user suggested¹ ² that instead of auto-completing the username, the upload system should use the real name of the user, so that he does not need to replace this every time he sends an image to Wikimedia Commons.

There should be a way to allow the user to configure what name will be added to the info templates.

¹ https://www.facebook.com/groups/241778385855204/permalink/917245674975135/
² https://commons.wikimedia.org/wiki/Commons:Village_pump?oldid=149811087#Help_with_the_Upload_Wizard