All the people who do nothing while working from home are the same ones who do not a goddamn thing in the office as well. It’s just that there, they are better at hiding their lassitude by gladhanding, ass-kissing and faking being busy.
A lot of managers just crave a false sense of control. In my experience, a crap worker is a crap worker anywhere. The noisy extroverts, though, hide it better.