That was a month ago. How about this:
"Labour had considered whether it could amend the motion in order to fix the election date, to prevent Johnson changing it in order to force through a no-deal Brexit – but has been advised that any amendments would not have legal force."
From the leftie Guardian: https://www.theguardian.com/politics...tober-election
Also, if it were just about Corbyn being a big scaredie chicken, why did the other parties take the same line? Some of them are doing pretty well in the opinion polls relative to their normal standing.