No, I don't think the online atheist community is going to Hell. And, no, I don't want it to, either.
I might end up there myself, and I don't desire their company. I understand the place is unpleasant enough to begin with.
By the way, ever heard the Hell joke where, behind one of the three doors (always three doors), there are people standing hip-high in manure and drinking coffee? The nearly-arrived soul chooses that door, and, once he's in there holding a coffee cup with manure up to his hips, the Devil comes in and says, "Coffee break's over. Back on your heads."
"Hell, no, we don't want those folks down here."