It's rather easy to remember a user when the majority of his/her comments you've seen are bitching about one thing or another.
Anyway, see pool #3755 for PMiSS Meiling, Akatsuki Dou made Save the Gate which also had PMiSS Meiling, actually even Warugaki's sleeping Meiling borrows from canon, jiroo also pointed out several canon things contradicting fanon using Team 9 here post #954748, there have been quite a few strips from various artists of Momiji being on bad terms with Aya after Double Spoiler came out, and Stripe Pattern took canon from UFO and twisted it to its most disturbing extreme.
But let's face it. Besides the games and some side stories, the majority of Touhou is fan driven. ZUN doesn't flesh out his characters that much and as such, fan interpretations are where the characters are most fleshed out or made interesting. Even the official mangas such as SSiB were only provided the scenario by ZUN.