The arguments being used here to try an prove 'Corbyn lied' are worryingly the arguments that despots and their followers have used for centuries. Never mind the truth or facts or logic let's just play on peoples prejudices to prove we are right.
We now have Niggly suggesting that if a train is full and there are not enough seats for everyone but a someone gets on and sits in the seat they have reserved, thus asking someone else to stand, the train in somehow less overcrowded.
She now repeats the idea that, had JC booked a seat the train would be less full too.
Baggs then adds her prejudice; the sort that attacks the person for who he is, that smacks of the prejudice of blaming Jews for being Jews and therefore causing the problems for some in Germany, blaming immigrants for being who they are and therefore to blame for the problems in parts of UK or blaming the people of colour for the problems in the USA.
Bags attacks those trying to stick to the facts of "desperately trying ... to impose" facts, logic and truth on "everyone".
There is only one purpose to this. If you use propaganda to demonise one group - in this case a possible opposition, if you go on trying to prove, against logic, against truth, that it's leader is a liar, for no greater reason than he is the person he is, it can only be so that people will not depose those at whose feet the problems actually lie - the current government. Distract people with the thought that Jews attack the state, immigrants do things that make us poorer, that the person of colour is to blame for all the ill, just find someone to demonise and they will stop looking for the real causes. So we see these attack the leader of the opposition using spurious arguments intended to show that he is a lesser person.
You wish to keep this government in power whatever they do and will use any means to do so, even going to the extent you have on here to demonise this person.