I'd support anything to get those people out of there.
I imagine it being me with my children....
And I agree that the evacuations came too late.
Displacing roughly 1 million people by car in this short a time is logistically impossible. I'm very concerned for people being stuck out on the road when this thing hits.
Regarding the airlift...keep in mind that it took six months to move 500,000 troops to the Middle East for Gulf War 1. There are not enough military airplanes to even make a dent in the NO evacuation.
Assuming you could scramble 100 C-130s and 50 C-5, C-141, C17 types (a doubtful probability), you could only board about 15,000 people. The airport would be utter chaos, the roads leading to the airport would be too congested, it just couldn't work.
I hope for the best in NO, but an airlift attempt will create more problems than it would solve.