I sort of disagree with that line.
There are as many bad kicks in the AFL as there are short and slow players. For every guy with Priddis pace there's a guy with Waters disposal.
Not only that but the idea that players can't improve their kicking is a myth. Andrew Swallow is a good example, was almost universally written off as a u18 player because of dodgy kicking. Now he is one of the best midfielders in the AFL.