Well, it’s different because Trump is campaigning for votes and to run a country. But everyone who disagrees with her owes us an explanation, because like you say it’s condemnation. I don’t think anyone should be condemned as a bigot without explanation, and that includes Trump. The fact we have blind condemnation without explanation is why people like Trump get elected in the first place, because there’s only a side to choose, not a position to consider.
I think the public is owed an explanation from them because they’re asking people to go along with them, accept them for the position they’ve taken, and accept they’re right and she is wrong. Why? The only people who are happy they haven’t explained themselves are those who are happy to condemn her without having read what she said, because it’s clear information and discussion won’t allow the outcome they want: condemnation of JKR.
Even if they’ve had private conversations with her, they could still explain their objections. They could say nothing. Instead they have blindly condemned. They have seen what this means - the death and rape threats - and have done nothing to back up their position. To that end, they’re no different to those vile people; willing to condemn a woman for her opinion just “because”.