I would take the German economy all day every day over the UK economic house of cards. The UK doesn’t make anything and was mostly acting as the financial center for the trading block in just left.
Brexit was a disaster for their economy and it will take decades for the UK to stop feeling the pain.
I'll take the "backward" German economy over the financial house of cards the UK economy is build on.
Germany’s economy is diverse, and their political system is robust. These two things are not unrelated.