A manager that has no clue what tasks are on the plate fir their team, and what effort these roughly represent, needs...
- this odious software
- to get fired for incompetence
It’s very silly for work from home people. Nothing stopping you from using a personal device at home. One thing is to stop phishing/malware but tracking at home when you can just use a personal device is silly.
The tracking might also check if you are doing anything on the company system. Hence a market for mouse jigglers to give the impression your work computer is in use.
You absolutely can't "just use a personal device" at home at a lot of larger companies. I mean you can try, but mostly you will just not be able to connect to the network, and if you do manage to get through you will probably be fired.