Interestingly, the Miami housing market outlook for 2019 is excellent, in spite of this news. https://gordcollins.com/real-estate/miami-real-estate-foreca... It would appear that people who actually have skin in the game believe otherwise.
Markets are great for short term simple extrapolative prediction. At long term and/or non-continuous prediction they seem to have had significant failures.
Maybe this is optimism bias writ large? Another possibility is that even if there is robust demand despite certain destruction, these houses are really worth many millions for the short term (for cachet, status, etc.). Here we model them as really expensive vacations.