If you go back one administration and search 'Obama clarifies' on google, you find the same thing. Turns out that press machines involving dozens of people are prone to human error.
This is one of three or four errors just in this address alone. An address that may literally be the most important of his presidency. It wasn't just some George W. tripping over his words, he said literally the exact opposite of what the policy actually was and just kept rolling.
This is too important to be grading on a curve.
edit: To be clear I'm not suggesting he misread the teleprompter intentionally. I am saying that he and his administration have a level of incompetence and neglect that would result in jail time in many private industries.
That's why Obama had to issue immediate corrections regarding troop deployments, economy, and policies. There's too many moving parts.