I don't think so. I would agree with you if it was a christian fan page, but it's not. it's a bible fan page, and one can be a fan of the bible and a fan of Satan.
just because it is probably moderated by christians, and mostly frequented by them, doesn't mean non-christians shouldn't be allowed to express their views there. there was no trolling.
are you daft?
and I still want to know how "everyone knows" I don't worship Satan. I'm in faithful contact with Satan, and I have a shirt that says as much,
and I'm not afraid to WHIP IT OUT!