Presidents should not say such things without anchoring them in context. A figure like that, if unsupported, is indicative of inattention and incompetence on the part of the whole team. If there was an accompanying fact sheet laying out the assumptions and math, I retract the judgment. One would expect diligent reporters to have questioned such a figure, but that doesn't seem to much happen in the court of Obama.
I agree. It also indicates they believe their listening audience is not very bright. Which may be true for the most part. But it still bugs me.