I fail to see the point. I mean, seriously.
What part of the following:
"I hate Xion, she's such a fanfiction character! *finds relief in Roxas/Axel/Namine as a trio*"
Makes you people think you're saying remotely logical things? What?
It's like, whenever I hear a "proper" complaint about Xion, they'll throw in a short rant about how Days could've been written without Xion in it. What kind of story they could've thrown at us without Xion.
..........
AND THEY'LL BE USING FANFICTION AS AN EXAMPLE FOR IT.
Let's be honest here, people. You don't hate Xion for being a bad fanfiction concept.
You hate her for not being the fanfiction concept you wanted to see make it to the canon.