I don't buy into those Alex Jones 'false flag' conspiracy theories. But I have say as a factual matter, when all the facts are laid out and examined logically, if someone wanted this to happen, and if someone wanted maximum carnage, every detail of what happened in this shooting enabled the shooter.
If this was designed by somebody for some reason to ensure the shooter was allowed to achieve his demented goals, they could not have done a better job in every detail.