Shocking though this BA experience is, I did have the same on a TAP regional route in J. "I don't know what that is Sir". I was, it has to be said, somewhat taken aback and even began to question my own knowledge of the origin of Port.

We may all have to get used to the fact that crew across more airlines are more international these days, less experienced, and probably less well trained in how to deliver the soft product.

So if the OP is considering jumping ship to Star Alliance, being somewhat selective of which alliance members to fly there may be useful!