Maybe it's just because I'm a gringo in Mexico? Maybe I should use a little more small talk charm? Or offer them gum? Improve my accent? Bring them a bottle of S.Pellegrino, nicely chilled? It's a stupid system.
Edit: A sibling comment inspired me to ask my girlfriend for her rating. It's a 4.89. Yet she always stays inside until the Uber driver arrives to pick her up, often honking outside for her while she finally starts turning off lights and shutting the house down.