This is to the point where many of these friends loathe to take an exempt job because they know their income will likely be cut in half on the initial transition without raises/promotions.
I wouldn't mind two weeks of 5x12s followed by a full week off.
Floor nurses often work 3x12 shifts, so three 12-hours days with four days off per week. When my partner was a floor nurse, she would often try to schedule that magical 6x12 shift that provides eight days of vacation. Throw in three days of PTO the next week and you'd have yourself a 15-day vacation!
Whereas, if I want 15 consecutive days off, I'd need to spend 88 hours of PTO.
To a lesser extent, there are some government jobs that gives options for 10hr work days so a person works 4 days per week. Shifting the day off for Monday and Friday and add in a few pto days per month, makes it possible to have nearly a week off work every month.
salaried workers being exempt from paid overtime in most European countries has turned in to a joke. Instead of just being used to deal with "emergency" situations, it's used to coerce extra work for free.