What he did was absolutely indefensible and he's done nothing but bring the Labour Party into disrepute since he became leader
I think multiple members of the Labour Party have done that. The infighting takes numbers of members.
I think he's a political nightmare for Labour, but he's defied the odds I gave him, and somehow really appeals to a large number of young people.
If ever there was a time for Labour to capitalise on the mess of Brexit, it's now - however, I don't think any party really fancies being at the helm after Brexit! Far better for 'the other party' to take the heat, then look forward to a long reign say 4-5 years down the line.