No. It's completely justified, humane and good when you have a contractor or employee who's dicking around, failing to meet expectations and the alternative is termination.
That's when we use it. Some people need to have discipline imposed from an external source, if they don't have it, they will fail.
If they turn their performance around they can ask to have it removed and we usually grant the ask. I don't have anyone senior on my team who has to use this system, because part of becoming senior is developing the discipline to not need this.
We give freedom to those who perform and explicit, direct, unambiguous corrective guidance to those who don't.
It's frankly a great system at the right time and place. I thought the OP's post was very interesting because being watched improves output for many people. Managers like having people in the office for this reason, too. But the OP's way of having himself watched was very expensive. You can do it for 15 bucks a month with a SaaS. The most interesting part is that performance usually improves even if no one is looking at the screenshot. This is an awful lot more relaxing than having someone hover over your shoulder all day, whether they're a manager or a person you hired.
Thanks for making the effort to judge us with zero context and six words though.