It seems more likely that people would retain a similar ratio of slacking to working.
As an aside, how does "I finish my work in 32 hours" even work? What does that mean? Are most developers out there getting paint-by-numbers printouts they need to color in and then they're all done for the week? Almost all of my roles in a professional capacity have required self-starting, and the project life cycles are much longer than a day/week such that there is literally always work to do.
If you're building a house and you're done nailing in shingles by noon you don't go home and come back tomorrow, you go put up sheetrock or install bathroom tiles. The "I finish my work in a few hours" that I see on HN and Twitter must be extremely poorly managed teams or people that are leaving a lot of work on the rest of their teammates.