H/D Fandom - just, urrrg! Stop sucking!!!!

So I've been reading Harry/Draco 'fic alot lately. It is a great pairing, with some top stories, but...

Where is this notion that Seamus Finnigan is flamboyantly gay and very promiscuous coming from?

Granted, it's been a while since I read the books, and I didn't pay much attention to him anyway, but I'm sure I'd remember if he was written as eyeing Harry up lecherously. Where is it coming from?

( A character can make a few jokes without being outrageously and unrelentingly flirtatious. )

It is a ridiculous notion that stems from blatant stupidity and a severe lack of knowledge about human behaviour. A fandom does not require an obligatory slutty character, and a story concerning homosexual themes does not require an absurd homosexual stereotype. I don't even care for Seamus in particular one way or the other, but I still can't stand him, or anyone else, being so warped so pointlessly.