User radxa Ubuntu 22.04 image

Hi Guys,

Does somebody know why there is a user radxa on the Ubuntu 22.04 official radxa image? I get that there is a rock user so people can get a start or at least one of the two user, but is there a reason for two? Because i plan to run a ansible playbook over it (deleting all created users id between 1000-1010) after creating a ansible user and later on create my own user besides root & ansible user.