This is the issue with all idiot politicians and government officials.
It is not at all a problem. Repeat something enough, people will come to believe it through sheer reinforcement, eventually they get the outcome they want. Idiocy isn't a requirement. (Not an obstacle either of course.) Maybe he really believes what he's saying or maybe he knows the flaws and thinks it doesn't matter, people just need to be persuaded to do the Right Thing and it doesn't matter exactly how.