When good writers are assigned to create the base of a movie, they come up with stories that are compelling and engaging. And they populate those stories with characters who are original, relatable, complex, and most importantly, feel real.
However, movie studios often hire writers who are not as skilled at doing any of those things. But since they want to get that paycheck at the end of the day, they finish their script by resorting to stereotypes that is been passed on through generations.
Now, while the general audience might not notice these dated stereotypes, there are some eagle-eyed souls out there who can. In this case it was Twitter user @_roryturnbull who got the ball rolling.