If the US now walks away from Afghanistan, she might be able to justify such a remark but from the evidence she is so far off target she loses credibility.
The food drops would seem to demolish the brain-dead "the US has only one interest in this war" argument.
If the *only* interest we had was bashing bin Laden and the al-Qaida, we'd have carpet bombed everything in sight. We do have other interests. We are seeking (to an extreme) to avoid civilian casualties. We are supporting efforts to organize, if not a "great" according to our standards, an effective and organized government.
If this were a purely military engagement, to demolish bin Laden and al-Qaida, Kabul would no longer exist. The cities currently held by the Taliban would have been bombed into rubble.