According to food bank Australia, we make 3 times the amount of food we need, and 70% of the food that is wasted is perfectly edible.

Update: I also recognize that nobody wants to pay three times the price for all their groceries. I'm not advocating anything, just shooting the shit.

The only way what you wrote could make sense would be if it's referring to crops grown for animal feed, and comparing that to if the crops were directly consumed by people.

So, the claim is thinly veiled propaganda for vegetarianism.