The US Constitution is a document deeply mistrustful of government and meant to protect “We, the People” from it. People have a right to be wrong, say stupid things (especially in private), vote for idiots, and harm themselves.
You can keep your own score, but in my insignificant opinion, POTUS gets 4 out of 10 and a 40% grade is probably an “F”, unless we grade on a Harvard grade-inflation curve against other current POTUSes, in which case he might be worthy of a third term with an “A”.