I feel you may be missing the point GBN.
The independent revue found incontrovertible evidence and Corbyn chose to play it down rather than embrace the issues. He could, and probably should have just put his hands up and said, yep, fair cop, we/I didn't do enough.
As usual, it's not the 'crime' , it's the denial or cover up that sees an end to politicians.
That's the same for left or right (Trump excluded)
This aside, it's apparently clear to any sensible Labour voter that Jeremy Corbyn was totally unelectable, unless of course, you regard an eighty seat Tory majority as success?
It will be a slow rebuild, starting now.
In my opinion, if it takes a Blair type of leader and policies to win back power, then so be it.
That is better than sitting on the sidelines whinging about things.
Under Corbyn, the mistake of assuming that more members would turn into more voters was a misjudgment.
Those on the far extremes of any political group generally live in an echo chamber and start to believe that the world thinks like them.
Confirmation bias is still alive and well.