I don't think we're doing the Labour Party any favours arguing about it.

You do.

That's the main difference.

The people on this forum are much too fond of screaming insults, rather than looking areas on which we can agree.

Corbyn wouldn't have mentioned the subject, if he wasn't trying to keep the Jewish vote on board. Try to respect his ambition to get elected.
There are circumstances when frequently expressed righteous indignation is counter productive and a complete piss off.