My off the cuff guess: Someone saw a young person in casual clothing in an environment that made it obvious they were non-local (i.e. a white dude in a Chinese airport or something) in an off-season for tourism, and thought "well they're either here for business or pleasure, and one of the few people that can afford a pleasure trip in the middle of the year like this (money + time off) is a developer."

Kinda fun to think about all the subtle clues we're giving off without even realizing it. Of course any of these observations could lead to a totally wrong conclusion, which makes me start to think of all the fun ways you could "disguise" yourself in modern society.