You can argue until the cows come home. The point is that they claim without evidence that humans are not suspectible to this kind of distraction.

If they want to estabilish this as a fact there is a trivialy easy experiment they can conduct.

“Someone on hacker news strongly feels it is true, and is willing to argue the case with witty comments.” is not how scientific knowledge is estabilished. We either have done the experiments and have the data, or we don’t.

The answer is three apples.