Lol sometimes it's "I'm a dick and people reacted accordingly so here's my headcanon why" or "i made up a cultural norm based on wikipedia". I saw someone make up a cultural norm foe Kazakhstan with the explanation that it dates back to their nomadic horse tribe roots, and I know multiple Kazakh people and none act like that norm would suggest. (Essentially the person made up that Kazakhs have to be alphas at the time)
For the record, I support the locals that are rude to tourists and just like no bro it's a social norm, we come from a long line of alphas. Genetically I must dom you.
All the good union gooning jobs getting replaced with gig apps