It has to be emphasized that the court didn't rule a rent cap per se illegal, but that introducing a law like this is a federal issue and not a Land issue. In fact a federal law to slow down rent increases in heated markets was introduced some years ago.
Having introduced a law like this with the full knowledge that it's not your business is a sign of either ideologically motivated incompetence or of shameless populism on the backs of thousands of renters who will now have to refund last year's rents.
Absolutely correct. This case was about federalism and not about material aspects of the law.
And it was 'shameless populism' - indeed. It was pretty clear how the Constitutional Court would rule but passing the law made sense nonetheless. Especially for the LINKE which can now feign surprise and simply blame the Court. Voters won't really care why the decision was made.