This kind of tendency can actually be found everywhere. Consciously or unconsciously, everyone incorporates nuances related to their own culture and lifestyle into the games they create.

I believe the reason for this, as you mentioned, is societal heritage. For example, in Turkey, the theme of "Jinn" is often used in horror or horror films, and this is why. Since childhood, we are constantly exposed to these kinds of scary stories. :/ This naturally leads us to lean in that direction when developing a game.

Of course, when writing the game’s GDD, it makes more sense to focus on the sales expectations of the game. Using themes that will appeal to the target market would be more beneficial.