A lot of people have been taught to read that as "therefore it's false" or "therefore it's true" or "therefore it's unimportant", but really all it means is that it is not amenable to scientific confirmation or debunking. That, and nothing more. Many things are not amenable to scientific confirmation or debunking that are true and false and important and unimportant and everything else.
Thus reality is carved away, leaving only the important part. Which we call "reality" of course.
You have an opinion that the hypothesis is false. I share that opinion. We probably have fairly radically different reasons for our opinions, though. Either way, they are just opinions, however well informed. We don't have proof.
(Gotta underline everything for you people, I swear.)
Aquatic ape hypothesis is similar. It's a initially a great theory and explains many things. Only when you start to investigate other explanations, the theory starts to fall a apart. Endurance running hypothesis on the other hand seems to hold. Incidentally it explains many of the same things as aquatic ape hypothesis, and there is more supporting evidence.