I suspect it's just a cultural thing. He lives in Taipei and clearly isn't a native speaker. I don't get why people get so bent out of shape over something so insignificant.

At university, many years ago, one lecturer referred to the BUSY pin signal on a chip as the "bus ypsilon" signal. English was his third language, as an East German German first, then Russian second, so we did not think it was a joke, and that was in East Germany only a few years after reunification so his English practice probably was lacking at the time. I don't think anybody ever corrected him the entire semester.