Come on guys, this is elementary. They approached a soaked runway with a very strong tail wind at MLW and flap 30. That in itself is stupid. That they didn't go around from an extremely long float half way down the runway is outrageous.
Sadly, I have seen others do this, and it appears there is a huge black hole in aircrew training: who has ever done any missed approached from below minima in training? I have never heard of it - all airlines condition their pilots to go around from minimums because they aren't visual or land; there is no baulked landing profile training. I regularly see FOs move their hands onto the reversers during the flare, removing their ability to quickly go around. I try to correct them, but it is over 95% of them who do this and they are clearly picking up this bad habit in line training. So, while the AA pilots showed stunning ineptitude, the industry as a whole has helped create a psychological channel that causes these sorts of overruns.