How so? Huge flooding in Brazil this year, they are not recovering any time soon. Poor countries lack the resources that rich countries literally burn for their luxury.
What do you think will happen next? What will happen is Brazil will start planning for it, and then they'll be fine. There will be an adjustment period, and then, life goes on.
Like literally it’s already too expensive to keep doing it without a massive funnel of taxpayer money into peoples beach houses. It’s literally only viable to keep doing that by leeching off the largesse of the taxpayer and other homeowners in less dangerous locales.
Florida also has the additional problem that it’s literally built on karst topology, it’s limestone riddled with tunnels and sinkholes so water comes right up under it, you can’t even pump the cities dry like the Netherlands.