Depends I guess if the "theme" is to be the sanitized Colonial version of the Caribbean you get at most all-inclusives and cruise stops or the "authentic" version of fish shacks, jerk stands, sound stations, etc. A good example on WDW property would be the Africa area of AK. There is a grittiness and authenticity provided by the more "realistic" portrayal.
Exact replicas, no, but there are opportunities to have the guest "expand one's horizons" by being exposed to a more "authentic" experience. This leads to a greater satisfaction with the overall experience, leading to greater engagement with the environment. WS pavilions are at times and in certain spaces, a good example of this, particularly some of the museum quality art and artifacts in the China and Japan pavilions. At least I'd like to think so.
But there are certainly plenty of examples on property that do speak to it being a dumbed down tourist destination.