Andrew You must have had a lot of contacts with Poles if you know this term......
If you want another example, where societal policy and societal norms have divorced: PR China's one child policy: the party has decreed 2016 that "one child per family" is not okay anymore, but 2 generations have not known anything else but "dad-mum-kid" families, so despite that 2021 even 3 kid families were legalized, all kinds of subsidies for young families were introduced, the "societal norm" is still the 1 child family, and realistically will remain for the next decades so.
No matter what the "law of the country" says.