Mandatory CCW training is the product of a political process several steps removed from the question of achieving reasonable practical proficiency with a handgun. So it's not unexpected that successful completion of a required CCW class doesn't necessarily prepare one adequately for the street.
While we don't need (or shouldn't need) government telling us we must have training, the wise and responsible gun owner, especially one who plans to carry a loaded gun in public or keep a gun for self defense, will voluntarily get training (well beyond anything required by government) to be safe, proficient and to understand his legal responsibilities.
It may be one's right not to get training (beyond anything required by government). But if someone makes that choice, don't expect me to congratulate him for it.
"It is long been a principle of ours that one is no more armed because he has possession of a firearm than he is a musician because he owns a piano. There is no point in having a gun if you are not capable of using it skillfully." -- Jeff Cooper