I don't see why people bitch about Vaan's VA. It's fine, you know why? Because an actual teenager voiced him.
You know what happens when an adult voices a teenager?
Tidus.
Vaan's VA > wtfpwnage > Tidus' VA
You know what happens when an adult voices a teenager?
Tidus.
Vaan's VA > wtfpwnage > Tidus' VA