I agree 100% that rules on political advertising need massively tightening. But I think that blaming the media for Labour's inability to persuade people to vote for it is rooted in this sense of moral superiority you so often get from Labour types. It makes it easy to blame others for being stupid, for not getting it, for being evil, for being manipulated (and I think you see echoes of it in the antisemitism stuff too).
And yet Labour were (and still are - though thankfully less now the Libs revoke policy has proved an inevitable vote killer) relentlessly chastised for refusing to outright abandon Leave voters and any attempt to win them round, despite being just as necessary a voting bloc to electoral victory, in service of a fully vocal, constantly shifting pro-remain stance which was entirely rooted in moral superiority, always presumed (and frequently presented) on the idea that trying to win these stupid racists back was a lost cause, and by largely the same nostalgic “sensible centrists” who demand their attitudes be pandered to, and treated with respect, or else they’ll sulk off and vote for the dark side, just to teach them a lesson!
Everyone to the left is a rabid radicalised Corbynista, and everyone to the right a swivel eyed racist... but calling ME a Tory is too far, sir! I can no longer vote to keep them out, and actually it’s all your fault. Good day!
Again, it’s this weird insistence that there’s some kind of real objective norm, and that it’s THIS!!! And that everyone who doesn’t agree with it needs to either pander to it, or grudgingly accept it, but anyone whose already onside needs to do nothing at all.