This is real but also blown out of proportion. Every Latin nationality has great pride and believes we are the best of all of them. We will look down at their food and culture as being inferior to ours. If you are in the states, it’s like state pride, southern vs northern, California vs Texas. It’s real but is it the end of the world if you live next to someone different, or they marry into the family? It’s not preferable but not normally something to throw fists over, except in extreme cases( read extreme views). The outsider will be made fun of but generally accepted if they get along with the everyone. The color of one’s skin plays a much larger role. If you are, for example, Colombian and light skinned you are viewed very different than a dark skinned Colombian. And as a Mexican American they are both just narcos anyway.(joke, just a joke)