I wouldn't be surprised if there's some sort of productivity software installed on my work laptop that I'm too lazy to investigate. It's their computer, they can do what they want with it.
If a manager ever talks to me about metrics vs output, I'll likely just not listen. The advantage of being skilled labor, I guess, is you kind of make your own rules as long as you meet goals.
This situation is much more dire for upcoming generations who work low level jobs like the service desk, where metrics are absolutely hammered and abused by bad managers. I can see this breeding a generation of tech workers who have ptsd about 'not being productive', which leads to burn out before they even get to a level where being monitored stops being relevant.