some of that people who are the "fandump" are the people who like the thing a season, but forget soon. Another ones stay more and turn into permanent fandump. or research about their object of adoration and turn into a fan normal...and after a true fan.
The bad thing of the memes is who turn all so bored and no offer originallity...not are you bored of, for example,the thing about psycho Flandre, pimp Marisa, Tsundere-Yandere Alice, the MANNOSUKE (XD) etc? i think who the meme is a kind of point of understanding, but an abuse of that can be bad...specially for ones who do doujins. Some of them simply are all the same...and no offer a new twist. But the memes have a short time of life; when the generation of fans who created that idea changed to other things, the next one, when see the meme, no understand nothing about that, and lost the meaning.
My fab meme? "all in Gensokyo is gay" (apart to my personal fujoshi preferences...(and im not a rabid fangirl)) because have lot of implicances, first lot of fanboys begin to fantasy about that...but forget the males.And then remember Rinnosuke. Then say who he is too, But who is sad for be the only male. The yuri fans NO WANT EVEN IMAGINE who Rinnosuke can have a male lover in this "paradise" full of lesbi girls, even if they no will appear in the hipotetical doujin. the funny thing? even the potencial here, yaoi fangirls no touch Touhou. that make me laught, make me think,make me draw, and make me sad.
(thinking no take so serious only a reflection) more correct is say "in Gensokyo, probably more people is gay than the real world" (Youkai are spirits and then no have an especial gender preference (bisexual we can say, but probably pansexual, same with the yousei, who are so free too) humans are (for biology) hetero, but for origin fluctuates sometimes in the homo or bi; Ghosts no can have sex because are only spirit, but can feel atracted for another soul; demons are bi (hermaprodites? succubus- incubbus are more especific in their genders...but this race trick human desires) half ones are "more bi" than a normal human (if youkai are bi, and human is neutral...a hanyou, a half ghost, a half hakutaku is in the middle, more open in their preferences) etc.
im almost tempted to put some of my you-know-about draws in pixiv(i have an account who i use only for lurk) but after think who i can awake an horrid monster...some fangirls are things to fear (the 801 monster is for something! im afraid)
Sorry for be like this. i like Touhou for the music and the world where all happen. Give you moments of dream a magical world for a time and forget your daily problems...the charas are lovable too.