I don't have a 'right' to privacy in my workplace bathroom stall either, but it's pretty fucking creepy if my employer watches me take a shit on the toilet too.

Now imagine if most employees didn't quite understand what the 'door security gates' are really doing, and you start to understand where the problems start.

That's the crux of the issue for me.

Also there is another perspective about labor laws, and if a society should allow employers to do such things in the first place.