When I started working from home, I realized 'office productivity' was just an act.
Back in the office days, I swear at least half my day was wasted pretending to work. I'd stare intently at the screen, type furiously on a doc I had already finished, or carry a folder to the printer and back just so people would see me. All of this just to look 'busy'.
Now that I'm fully remote, I finish all my actual work in about 3-4 hours. After that, I can go for a walk, run an errand, or just relax for a bit. But if you tell your manager that, you're suddenly seen as lazy or not committed, unlike the person who's just warming their chair for 8 straight hours.
It's crazy how corporate culture values the appearance of productivity more than actual productivity itself. Honestly, if I'm finishing the same work in less than half the time, then I'm not the one who was wasting time. The whole system was designed to waste my time.