Yes, that is very true, though again I don't think it's limited to slash fans. I think it's less to do with the orientation of the pairing and more to do with who is being "fought over". It's usually either 1 male or 1 female, or 2 females, fighting over 1 male. Since fans are much more likely to bash their favoured character's rival, statisically, it's more likely to be a woman.
What happened in fandoms where the one being fought over was a woman? From what I remember long ago, it was Angel and Spike who bore the brunt of the Buffy ship wars, not Buffy.
Re: From metafandom
What happened in fandoms where the one being fought over was a woman? From what I remember long ago, it was Angel and Spike who bore the brunt of the Buffy ship wars, not Buffy.