I think it's pretty valid to make a distinction between authors saying "Hey, BTW, my book is eligible to be nominated!" which a ton of people from all kinds of backgrounds do, and for that matter "Hey, this is a bunch of cool stuff I've read that you might want to check out that's also been eligible," to putting together a slate. There's an argument to be made as to where the sad puppies fell. There really isn't one with the rabid puppies.
(And really, as many people have pointed out, when you have so much stuff being published, and a relatively small body of people nominating things, it's a system where even a very small organized voting bloc can get something on the ballot. This isn't the first time this has come up, even, though it's the first time there's been a slate that I know of. There are a number of reforms to the nomination system being looked at, so things might be changing.)
Card... So, you do know that opposition to gay marriage is only one of the more recent bits there? And he takes it an awful lot further than a lot of people seem compelled to by their faiths. He was, at one time, one of my favorite authors. I attended one of his Secular Humanist Revivals way back when. He seemed to be a great guy. I mean, this was back when the net was flat, and I was a young thing, but still. ...and I guess I should be glad that the quality of his writing had been falling off by the time I heard about him writing about how there should be laws criminalizing homosexuality, which should then be selectively enforced to keep the unruly ones in their places. *boggle* The volume has increased and decreased at various times over the years, but I do think there's a difference, at least in degree between someone thinking that their own religion is a great reason some other people entirely shouldn't be able to get married, and their own religion is a great reason those people should be thrown in fail unless their keep their heads and voices down. Ew.
(Of course, as a bi woman it's perhaps not surprising that I'd take this a bit personally.)