Good or Bad Argument

Working at the mall in the food court sucks. There are a lot of filipinos in the area and they are attracted to the store because it serves homestyle filipino food. It gets busy and customers can get irate. They cut in front of others, they also get easily irritated if you simply mishear what they order, and they make you feel inferior if you don't know how to speak tagalog. They look at you with disgust or disappointment if you tell them you're not filipino because to them, why should non-filipinos be working at a filipino eatery? The majority of the customers are rude; therefore, all filipinos are stuck-up.

Analysis: I think the argument is strong but it isn't a good one. The premise is plausible in saying that a majority of the customers are rude because this may in fact, be true, but it doesn't support the overall conclusion that filipinos are all stuck-up. Though the premise may be plausible, it doesn't support the conclusion of filipinos being stuck-up. This means that the conclusion isn't plausible though the premise may be. It's greatly bias towards to assume that filipinos are stuck-up just because the majority of the filipino customers have been rude. This is no concrete evidence nor logic to the remark that ALL filipinos are stuck-up. The argument is not valid; filipino customers may be rude but that doesn't validate the assumption that all filipinos are snobby. One cannot soley base his or her opinion about filipinos based on experiences from certain filipino customers.