Rule 6 taken together with the maxim "Nobody's perfect" means a world where nobody can criticize anything, ever. Doesn't sound ideal to me.

Rule 10 is self-contradictory, since it doesn't specify what "precise in your speech" means.

Rule 11 is oddly-specific (why just skateboarding and not any other risky activity?), and reads like it's thrown in there to look "cool" ("how do you do fellow kids?" meme).

Rule 12 is vapid fluff. It's also potentially dangerous, since a unknown stray cat may carry rabies, or be fearful of humans and claw you up bad.