Earlier quoted context omitted.
No, Labour isn't a popular vote. It is a popular vote AND a union vote (and the PLP, although they have never mattered in practice, they tried to oust Corbyn three times iirc...didn't work). Corbyn had popular support but, like Miliband, relied relatively heavily on unions...and one union at that: Unite (and btw, his popular support was always overstated hugely...in late 2019, you had a sizeable minority who thought…
Corbyn and McDonnell were essentially communists and therefore unelectable. Blair took the realistic route: Socialism does not work, let's have a market economy create wealth that can then be used to finance social programs. A flavour a social democracy. I think a reason Corbyn was so popular among the young is that enough time has passed so that this generation has no idea what socialist countries in Europe were act…
Brownites sound good but say nothing specific...often the specific stuff is bad too. I agree with you in that there is a route in the centre, but Labour aren't. The party is fundamentally broken. Starmer isn't it, Reeves isn't a leader, Streeting is a joke. Obviously, they have moved to the centre on immigration and crime but...the party are just mad, and it doesn't seem authentic at all (Starmer was a human rights lawyer, getting rid of ECHR is the only course...you would have to be an idiot to believe he would do that, it just isn't credible).
The ambiguity of Labour is causing part of these problems. For example, their position of ambiguity on healthcare...clearly, it is broken...but they decide to be ambiguous (again, classic Brown) so their polling numbers stay up. There needs to be some kind of cross-party move towards reform but it is impossible when one side just wants to score points as the "protector of the NHS" (and it will end up with Labour winning, then finding out they are neck deep in trouble trying to do reforms that don't work...it will never be fixed).