Ahh ohh, makes sense. I thought you were referring to the demonstrations with "libertarian's nightmare". And only with "landlord's nightmare" to my rental situation.
Yes, in Germany there are only very few valid reasons for temporary rental contracts. It's good for tenants but bad for the landlords. But living rent free sounds crazy 👀
If I owe the landlord a single cent more than the rent of a month, they have special rights to kick me out.