Bottom line, you're getting it wrong.
First or all, this answer from support means to gtfo and they can't help you. This is where everything ends, usually.
Secondly, some feedback makes it back to the devs, but in a filtered manner, probably without a specific source and therefore you cannot link one to the other.
Also remember, that the l2 team in Korea is running a skeleton crew and probably doesn't care about feedback, as long as they meet the requirements to provide extension content to keep the trapped fish on the hook.