I'm another reluctant ProctorU user, and using it thrust upon me if I wanted to complete my online master in CS. It's spyware, and it really is that awful. At least for my tests, it's required that you buy an external camera, and scan the entire room before taking the test, it records you the entire time, and runs in the background (and foreground) with system level privileges. Taking a test this way is very stressful this way, compared to just walking into a building with just a pen and your phone on silent.
Nearly every college student during the pandemic had to use ProctorU in order to complete their classes, or a similar alternative. Quite disturbing the experience is normalized, and I wish there were an official OS level feature for "report all activity on the system from time X to Y", without having to use a sketchy third party app.
I wish the author the best of luck fighting the requirement to use ProctorU.