How is it possible their economy was only slightly blunted, despite vacationers (Florida's major income source) being in lockdown states and countries?
It's a strange conundrum that escapes all logic, isn't it?
Don't confuse state-level requirements with how people actually behave on the ground. For instance, FL has no state mask mandate but nearly every county has or had some requirement:
Beyond the veil: What mask requirements are in place in Florida?
The real challenge for epidemiologists post-Covid will be figuring out what behaviors actually affected the spread, and I'll bet state mandates end up being pretty far down the list.