Slippery slope surveillance.
I worked at a shop where the boss was very curious when people went idle. So, if you were white-boarding a problem with a peer, you'd both get asked later where you were -- since your mouse was idle.
It got tiring. it was one of the reasons why I left.
But those people are out there, and they're hindering the career of people who appear idle because #goodhartsLaw, and sometimes you don't know they're doing it.