It does benefit society by creating a baseline energy source that is cleaner than coal or natural gas.

Which ignorants can - and will - proceed to piss away on terrace heaters to have drinks while having a smoke outside on the street

So what is your proposed solution? Outlaw non-renewable energy sources and simply let energy prices to go up by any amount?

Carbon Tax + "Carbon Dividend" (UBI) so that the vast majority of poeple's CoL does not go up at first but if they can reduce their car usage they can rake in the dough, is a nice first step.

See https://rooseveltinstitute.org/publications/decarbonizing-us...

The larger point still stands.

Investments look more bad than they should when:

- We ignore externalities

- We ignore that demand changes too, whether in response to monetary magic, or simply do to elasticity (it was always there, we just didn't know it).

This applies to both Keynes's examples and nuclear.