It just feels to me like some sort of secret we all share and pretend like it's fine, but being honest and just doing the same stuff in say 32 hours and cutting out the cruft in between would be great.
Or maybe it's just my add that likes a bit more pressure, I don't know. But what I do know is that, even with a very relaxed employer that allows you to take your time and chill, go workout or play a game for an hour, I can't fully relax or disconnect knowing that I'm expected to do those 40 hours, regardless of how often they say it's fine.