Fandoms have existed forever, it seems. They certainly pre-date the internet as, for example, the Beatles fan community in the US is celebrating the 50th anniversary of their appearance on "The Ed Sullivan Show" in February 2014. As a group that fan community -- not just in the US but internationally -- gets along because if there's wank at all they've had half a century to work it out.
If you're new to fandom in general you may not recognize the word "wank" as I used it in the last paragraph. In this context it means drama and there's plenty of it across the board. Author Cassandra Clare still deals with wank generated during her time writing Harry Potter fan fiction from a decade ago and charges levelled against her have included plagiarism and bullying. I'm not judging whether this is fair to her because if that information is completely suppressed then how is that fair to one with a genuine grievance against her?
One thing I will say in Clare's favor is that she has not so far, in information that you and I can equally access, distanced herself from anything that she has written or said under her online identity. The name Cassandra Clare is a pseudonym but she owns what she has written under that name, as in she stands behind it. I cannot find an instance of her using a sockpuppet, or an alternate identity, and though I may not agree with what she says in a particular case that alone takes grit and especially at her level of the game.
The same cannot be said for the Armitage fandom. Sockpuppets abound here. I can think of two people just off the top of my head who have multiple identities within the fandom and there are others that I question. I'm not talking about a pseudonym here because no my mother did not name me jazzbaby1. But if you're maintaining an image as being above a particular type of discussion and then you jump into it under a different identity you are being fundamentally dishonest and the only interests you're serving are your own. It also helps to maintain the incredibly convenient fiction that there's only one bully in this fandom and that's also unfair. Crap gets attributed to her that happened before she even joined the fandom and that is just that, crap. This is NOT an endorsement of anything that she says because oh my yes do we disagree about mostly everything but fair is fair.
This is a huge and freewheeling community and it grows every day and as that happens by necessity it changes to reflect it's members. But there's no rule book that governs us and your worldview is not the only one. If you want to carve out space for your view have at it. As for me, as Billy Joel sang, "I'd rather laugh with the sinners than cry with the saints. The sinners are much more fun."