secrec probably there are different device administration apps with different levels of control, but that level can be very high. It can be controlling the device in and out, every single bit that is happening on such device. Install uninstall soft, is nothing compared to the power it might have.
Strict and very precise arranging what features can be accessed by user, Up to modifying the screen lock method and blocking factory reset attempts made from recovery mode(!) therefore protecting itself from being wiped out from device. Example of such admin controlled devices is when an employer supplies it's employees with it for some business related activity. There is no known to me reason for one who owns and uses that a smartphone to setup an admin app.
I as well would like to know why Aurora store is even listed there as an option to be set up as admin? Could it be due to it's similarity to original Play store app?