Honestly I expect some Dominicans intend the use of "aplatanado" as a comment especially among friends but I expect there are Dominicans just like the rednecks back home who will never accept a foreigner. Such is life.
We'll always accept foreigners, and consider them family, guest and friends, but the cultural difference is too big to bridged.
Nobody in the DR is going to tell I don't want to talk to you because you have an accept like some people do here in the U.S,. or I don't want to talk to your because you are a foreigner. Big different between Dominicans and Rednecks from your home state.