Meh, guys really over-thinking this.
It's like if you go to take a calligraphy school entrance exam, they tell you you have to answer True or False questions to grade you, and you don't realize that the way you write your name and your answers will also figure into your grade.
This whole "should've known" is nebulous at best.
Any other instance they could've gotten zero points for their heroics, and rationalize it as "as a Hero, you also have to learn to follow rules and direction".
So once again, meh on this.
I do agree with the general assessment of what you would've preferred to see though. As in maybe a candidate here and there might've wondered about other potential aspects besides point that they be judged on, but as a general observation as a given? Yeah, overthinking it a bit.