Apart from the specific case, which is sad, the number of incidents at one place to me is the odd one out. Past Covid infections may be a factor, lesser physical fitness or any other factors. I have no info on them but i can imagine that having an effect.
However, that should be apparent at more holiday destinations than just Bonaire, wouldnt it? I havent followed the exact travel restriction from the U.S. (and otjer countries) to the usual holiday spots but that could possibly be a reason (ie Bonaire being open for business while others are not). Otherwise i would expect the same things happening elsewhere too.