Well in Romanian there's a saying: "Stupid's not the one who asks", implying that the gullible "guess" who gives into the shameless unreasonable request is the sucker. Implying that although "guess" culture is the expected civilized social norm, it's usually it's brazen antagonist that propels your interests forward.
All this seems like good old stereotyping to me. It often comes down to the individual family or even the individual person. Maybe their social skills, maybe their level of selfishness. Maybe also how much they care about how they're seen by others vs how comfortable they are being themselves. A lot of factors can play into this.