They'd still have a better lifestyle if they used the same amount of energy and used it more efficiently. The lifestyle Germans enjoy is falling behind a hypothetical world where they implemented a cheap energy policy.

How much energy they produce is much more important when assessing how their renewable transition is going. They have barely managed to tread water by doing less per capita and matching their old supply. This is a far cry from the optimistic touting that solar/wind was a viable market competitor to fossil fuels - the evidence here is that these forms of energy are worse.