I have been to many countries, having attended witness functions in various countries. There is a difference. E.g. in Scandinavia, the Danish witnesses are regarded as liberal, e.g. allowing brother with beards to give talks also at district convention level, whereas in Sweden, dancing is not allowed at weddings in some areas.
IN Portugal, I experienced an elder drinking a glass of wine before conductiong the Watchtower study an hour later. Unheard of in North. Europe.
Culture definitely plays its role.
I found American witnesses as well as German witnesses to be more extreme than their Scandinavian counterparts.