The "Feedback" section of the forums is only for feedback and bugs concerning the FF14 website, the lodestone, and forums. If you want to post about game stuff you have to post in the proper section of the forums.

They require you to be a certain level because there have been many problems with troll accounts in the past as well as people cluttering up general discussion by starting like 20 different topics.

Also the devs do look at low level complaints in the new player help section since this is specifically an area for new players to post.