For once I totally agree with you. Good points there
As it happens, I'm about halfway through reading the Labour manifesto and I'm finding myself pleasantly surprised by it. It's (rightly) not radical in the nationalise-everything rejoin-the-EU-now tax-the-rich-till-the-pips-squeak sense that I sense a lot of people on the left want, but it is describing a very different way of doing things, with a lot of emphasis on long term planning, strategic investment, and stability for businesses. There are also some nice surprises - like reforming the business rates system so that high street shops pay less and online businesses pay more, and expanding post offices into high street banking hubs. Labour are not proposing to turn the UK into utopia and there are loads of individual things I disagree with, but overall their manifesto does look to me like a reasonable blueprint for using the resources we currently have available to enable more growth.
Reading between the lines, I do wonder whether there's a long term plan there to use the first Parliamentary term to stabilize the economy, at least somewhat ease the cost of living crisis and (hopefully) show Labour can govern competently, and then at the next election in 4-5 years time, maybe we'll see a Labour manifesto promising more radical change. If I recall correctly, that is after all something like what happened with both the Thatcher and Blair Governments (Blair stuck rigidly to the previous Tory spending plans during his first term, and then started to raise spending after that, while Thatcher only really started her most radical free market reforms after 1983).