Why not simply re-enable UAC?
We have a GPO here that turns on UAC so even if it did turn it off during an install, UAC would be back on after the machine restarted. Is the author claiming the split screen software won’t work with UAC? Why not try it? Can’t the software be “Run as Administrator”?
Sometimes you have to test things and adjust. As a system administrator, testing is my life!
Because I would not trust software that does something stupid like this. Who knows what else it has messed up?