This is exactly how things work with the media at present. I point out that an actual member of the Tory party used to be in the IRA and I will add, once said "I agreed with the shooting of British soldiers and believed the more who were killed the better…", but you simply dismiss it as if it doesn't matter.
Yet you state all these things about Corbyn which are pretty much unsubstantiated or false accusations - in fact there is a rather
good article here explaining more or less everything you have bought up. It is rather a long read but it concludes:
"Apparently, we’re quite happy to make these claims against people even when it’s clear that the actions of the individuals in question are in the interest of encouraging peace processes, challenging media biases or facilitating cross-cultural conversation.I find it deeply troubling that, of all things, Corbyn should be attacked for supporting violent and hateful organisations and individuals when he has spent so much of his political career fighting for free speech and trying to bring about the conditions necessary for peace in many different parts of the world.
It’s hard not to conclude — given how aware most journalists and politicians are of this fact — that those responsible for circulating these accusations are guilty of political point-scoring of the lowest order."
In regards to his own party, this is a man who has been given an overwhelming mandate by his members to represent them, the fact that a few right-leaning Labour MP's don't like him is probably the least of his worries bearing in mind the world he wants and what he stands for.