I think it’s true that every driver should take responsibility for their own internal state, and do whatever they can to ensure they don’t drive in an impaired state, whether that’s just getting enough sleep, avoiding alcohol or certain meds, or being prepared to pull off the road and nap.
FWIW - I normally have some kind of insomnia and take long time to fall asleep; but if I'm that tired, I can pull up into gas station or Tim Horton's (it's a Canadian thing:) and have a 30min power nap immediately. It's the only time I CAN have a power nap, but it works wonders.
I fully 100% support the general notion expressed here that if we find outselves in a risky position as a driver, we should do something to mitigate that risk. I don't think "don't drive" is always in every circumstance a achievable recourse though, so a power nap can mitigate risk significantly.
You might just doze off for a second or two and hit a tree or worse, someone... ( best depiction: https://youtu.be/ya3_EwQdJrk?t=30 )