True. Very few goals are down to one single mistake alone, unless it is the goalkeeper or central defender making a howler that you cannot recover from.
Usually they are a compound of several mistakes, each in it self "repairable", but in sum unrecoverable. Even Davies stupid slip could/should have been recovered, but since that came on top of the initial mistake, the compounded result was too much to handle. And in the end, his mistake gets the blame. (Don't get me wrong, he clearly deserves a huge bit of blame on that one, and I'm quite certain he would be the first to acknowledge that!).
The main difference between a team in the flow, and a team in our deep brick, is that when you have your tails up, high spirit and high belief, you don't let one mistake lead to another. You break the chain before it becomes a problem. In the other scenario, a mistake increases the chance of a second mistake, due to poor confidence, poor judgement because of poor confidence, and just because "bad luck breeds bad luck."
We're so determined to find spacegoats (and heroes, for that matter) that we're more focused on who touched the ball last than what caused the situation. While if we really want to understand how to stop it from happening (or recreate it, in case of the hero) we need to see the root cause, not the spacegoat (hero)!