I'd have to agree with you. Employees at fast food restaurants are, in fact, people too, and you don't know how they're day, week, or life has been going up to the point that you ordered your meal, who knows? I work at A&W and i've had a bunch of rough stuff come my way, could i concentrate on work? no, did people let up on me? of course not. So just try to keep that in mind.
However, it's not that hard to get an order down correctly using the pen and paper/pointing method. We had one deaf person come in and order for his family and we got his order out correctly the first time without complaint 
