No, they should have shut down earlier and believe it or not heads rolled over the HEA at MK on the last night, which made national headlines. It was also four days in the very early days of the virus, they had some (not much) but some time to spare. Not now when 90,000+ people have died and a million infections. It's a different world.
They are far more conscious now than they were then, given how much more this is a national concern.
As has been reiterated, they announced their closure based on the CDC guidelines - not the state of Florida. If the CDC still says travel should be avoided unless it is essential, they will not be reopening a resort complex that will cater to mostly out-of-towners. Doing so would be reckless.