Labour hasn't done as well as they had hoped. I reckon they might do better without Corbyn as leader. At least the ghastly UKIP has been almost wiped out, which is good.
I don't see any evidence that labour would do better without Corbyn. After 2015 the love in England was having with the right handed the Tories a majority. May lost that in what is still the greatest act of political incompetence and in the face of excellent Local election results.
The message was the electorate took exception to Mays expectation that the country would line up for a shafting.
Corbyn got the youth vote out, the local elections show deadlock between Tories and labour even with all Tories now back in the fold. Also I wonder if youth which has put Corbyn where he is today would I imagine youth voting in as great numbers in local elections, no.
On the other hand Jez is getting on, has no natural successor and the Blairites have not taken part in the Labour Party because they are frightened to be seen in opposition, any opposition Ummuna being the prime example.
All this might convince T May to risk asking the electorate to bend over in 2022.