You have levied some serious allegations. If the other side doesn't get a hearing I'd say you are seriously at fault for slanderous hearsay.
I don't think there was anything particularly new in the posts by crashfrog. I had heard it all before. It has been aired in the news media. Robertson is a public figure, by his own choice. I don't see a problem with public criticism.
You seem to think that we should not judge him. But we make personal judgements all the time. Before I make a purchase at a store, I make a judgement as to the basic honesty of the management of that store. It would be naive and foolish to do otherwise.
I made my personal judgement of Robertson a long time ago. His latest outburst was not any particular surprise. I find it entirely consistent with his character, as demonstrated in his earlier public behavior.
You are correct, that this is not a court of law. Nobody else is required to accept my judgement of Robertson. However, I am surely entitled to reach my own conclusions.