Corbyn went into last month's election like a man preparing to jump off a cliff in the expectation of spontaneously developing the ability to fly in mid-air, because he was surrounded by a clique of sycophants and fellow-travellers who'd spent years telling him he could definitely do it. Meanwhile another group of more distant acquaintances were saying "You know, Jeremy, I'm really not sure this is such a great idea", but were shouted down and ignored by the first lot (or told to "fuck off and join the Lib Dems/Tories", of course!).
Now that the inevitable and entirely predictable result has come about, members of that inner group - such as whoever wrote that twaddle quoted by version - are lashing out at the other group for "causing" the defeat by "not believing" that their absolute boy could fly, and therefore undoing the magic that would otherwise have worked.
And for god's sake, isn't time to let go of the hate-puppet of Tony Blair? I'm sure he'd love to think he still has enough influence to affect the outcome of a general election, but that's nothing but a figment of his own egotism. The idea that former Labour voters in the North and Midlands abandoned the party in 2019 on Blair's say-so is utterly risible. These voters may not have warmed to Corbyn but they have no love for Blair either, or for any faction within the Labour party - indeed, for the most part, they've given up on politics altogether. Remember that the Tory vote share rose only by just over 1% compared to May's not at all impressive result in 2017, whereas Labour's fell by nearly 8%. And while Corbyn's unpopularity in the last two years has sent it into overdrive, it's part of a general trend that's been going on for a couple of decades now.