I wonder if there is a disconnect for people who were brought up in butts-in-seats culture who then count presence at work for 10 hours as work despite possibly

I wonder if there is a disconnect for people who were brought up in butts-in-seats culture who then count presence at work for 10 hours as work despite possibly turning in 50-60% of that time producing something of value. Then you have others who are more used to billable time or flex work or similar where they view that 5-6 hours (+ breaks and food) as an '8 hour' day and the two can't understand how the other manages. Lucky is the person who can throw themselves at problems 10+ hours a day and look forward to going back to it the next day, I guess. I can easily and happily do that in the 6-8 range and feel proud of the previous day's work and be ready to do it again the next day.