> Efficiency alone almost certainly will not allow us to avoid climate catastrophe, due to the Jevons Paradox:

Meh, it depends.

Having a light bulb that uses 15W instead of 100W to illuminate a room is certainly a win. There's only so many lights that you'd put in a given area to achieve the same result, even if you add more for aesthetic reasons: there's only so many lumens that are useful in an area.

Furnaces and water heaters are now >90% efficient, and given that they (direct) vent from the outside, and exhaust to the outside increases safety and air leakage. Do you add more heaters and furnaces to a house because each is more efficient.

Cars are more efficient, and yet total annual distance driven (in the US) seems to have plateaued and fallen over the last decade or so:

* https://www.greencarcongress.com/2019/12/distance-driven-per...