If you're going to give a vague insinuating tweet regarding him being uninvited then yes they need to clarify why otherwise how do I know there is even an issue

If you're going to give a vague insinuating tweet regarding him being uninvited then yes they need to clarify why otherwise how do I know there is even an issue here? Many tickets purchased by people would be to hear Crockford himself speak (he's a real crowd drawer in JS conferences). So if he did something wrong that's bad enough to make multiple speakers, those who actually wouldn't have to interact or deal with him much at all, then it needs to be public because it's apparently bad. Alternatively if they don't want to say because, let's say he did do something awful and saying why would give the victim away, then why the original insinuation in the first place? Instead they should have went the professional route of simply saying he's no longer coming or something. Ultimately we, while allowed to say almost anything,need to mind what we say about others. If someone is saying unsubstantiated things regarding someone else that could be career ending in this current climate. If it is substantiated then it should be brought to the attebtion of police or perhaps the public depending on what it is.