I'm sure she's not worried that anyone in Jamaica will disagree with her. Most of them have some sort of interaction with tourists I'm sure.
Ironically, when my mother-in-law was in the Peace Corps in Jamaica a number of years ago, she had similar observations about the locals as this lady has about black tourists. My MIL said that the black locals they were trying to help treated the volunteers like they were their servants. They were extremely rude, had no appreciation for anything, and in fact had highly entitled attitudes, like they were owed the charity that was being extended to them. Sounds exactly like home here in what used to be America.