I live in Miami-Dade, close to where this happened, and it wasn't sabotaged. Florida is sinking because the soft sediments underlie the state are compacting. The islands built up from coral and sand underlain by the marls and limes of the region means the area is sinking, and adding a building on top of it only makes it sink more. Florida was under the ocean when the sea level was higher, well before the Ice Ages. That was about 50-15K years ago but was exposed during the Ice Age. That's when the state was created. The water level has increased since the middle of the last Ice Age, and erosion of the state began the minute it was exposed above the ocean. No one is going to "fix" that. No one will stop the next warm-cold cycle and the future Ice Age that will expose the state more if it doesn't get drowned in the meantime.
Combine all of the above with corrupt politicians being bribed to get building permits through even with third-world construction, and you see the results.
Btw, the neo-SSPX priory in Florida had nothing to say about the collapse. No call for prayers for the dead or missing, nothing. Their bulletin was loaded with all sorts of fundraising initiatives. Even the Novus Ordo sect had a priest in the area counseling the families. I would say this particular area is primarily Jєωιѕн, but Miami-Dade County has a vast Catholic population, the largest in the state.