I’d not heard of it, but after looking into it, it IS parody, and it IS Berlin - a city where anything goes.
I think there’s a movie coming out.
Love for Hitler is nothing new. I’ve seen it myself, amongst older people, all now probably dead. There was one old lady in the dentist’s, openly lamenting days gone by. Such as: there was discipline In the country, bus drivers were polite, and much more ranting.
These days, hardly any Germans are bus drivers.