If you think the Labour party showed total unity and gave Corbyn a chance from the start I don't know what else to say to you.
I think it would be obvious to say that the Labour battles over Corbyn haven't helped him at all, but it just goes to show that it's pretty stupid to have a leader who is unpopular with his colleagues to begin with. It was pretty stupid to not walk when there was a big vote of no confidence also, regardless of the justice of it, there was no coming back from that. (Not that I don't think it wasn't a massively ill-judged attempt to get him to leave, but Corbyn not walking should have been easily anticipated). It all comes back to the fact it was a massive mistake that Corbyn was given the chance to run in the first place when he never had that support, rules were there for a reason. The PLP thought he would be a disaster and he didn't have the skills to win them over. It's such a mess.
But even then, the internal shitshows just meant the media didn't have to even really attack him and could just save it for these next few weeks. Right now the public just think Corbyn is shite, but if the media had been constantly attacking him with all they had, I think they'd fucking hate him. That of course, is why the party didn't unite behind him to begin with and is keen to disassociate from him. It's not just that he's shite, it's all in Yorky's post, there's plenty in there to make people think he's toxic.