For the record, it's not just Starbucks that does this, but it was what immediately popped to mind, and even at Starbucks, it's not the "tall," "grande," "venti" that I have a problem with - if I want a grande, I order it as a "grande" - I don't say "medium," for exactly the reasons Jason brought up. But it took me long enough to figure out that they call a grande iced coffee with a shot of espresso in it an "iced grande red-eye," but almost as soon as I started ordering it that way, they changed up on me and started throwing in this "iced grande iced no classic coffee with an add shot" thing, and then often, not always, but often, seemingly resenting me for ordering a simple red-eye.
That's all.
Carry on...