As there is currently no majority for anything, an election to get Parliament out of its inability to do anything would be a helpful move. The fact that Corbyn doesn't want one is also a good recommendation to do the opposite.
Strange thing - he's been banging on for months that we should have one. Now it's offered, he doesn't want it. It couldn't possibly have anything to do with the fact that the Prime Minister has changed, could it? Theresa May, for all her fine qualities, is not a good election campaigner, as we saw 2 years ago. Now he's faced with Boris, he's frit, as the Iron Lady would have said.
Now please, don't insult the Muppets. They were thoroughly fit for purpose.