Quote Originally Posted by Josco View Post
Nope, you can set your main class manually. Go to "Settings" in the upper right, click "edit character," and you can pick which of your characters is your main. The first job (on the left) you pick from the dropdown is what's displayed as your main.
It's probably just an alt they have for use as a forum face. Don't get too caught up with whatever character or class someone has their forum set up to.