His six hour day thing reminds me of a wheeze a manager tried in my old company when it was coming up to crunch time. He sent an 'inspirational' email where he said that if we all were to simply work an extra few hours after work each day, then four hours on each of Saturday and Sunday, then - voila - we would magically find ourselves with the equivalent of an 8-day week. I don't think many took him up on this.
Though to be fair to him, it was very specific and actionable advice!
This resembles a meeting I had in the past. The manager said we all had to work a little harder because the company was doing bad. He suggested to stay an extra hour every day.
He then concluded with "Oh yeah, and Li is going to take over my tasks for the next 2 weeks, because I'll be on holiday".
Though to be fair to him, it was very specific and actionable advice!