That's not the worst thing. Having more work means you're less bored. You probably won't be payed more though. But being too productive can cause you to have no next task, wich isn't the same thing as having free time.
I think that's part of the reason why devs like working from home and not be spied on.
You’re saying companies don’t get information on how remote employees utilize their time? I could almost be sure many companies do that.