I don't understand why it upsets you people so much. I guess I'm not a true KH fan then because I've offended your sensibilities. Knock off the gatekeeping.
And read this:
And show that you read it. Unlike your friend Nautilus up there.
The thing is that no matter what you think and no matter what wikipedia says, the non-numbered titles (aside from Coded) are considered mainline by both the creator AND the fans. No matter what you say, that won't change, you can keep linking that wikipedia page all you want but what the creator says and the consensus among the fan base is that the non-numbered titles ARE MAINLINE TITLES.