I don't care what you do with your account, but technically, you are wrong. You have zero responsibility after you ship it to Florida.
I have shipped dozens of things to the coast that are ultimately being put in a shipping container to China or Japan, for the end user. I don't sell overseas either.
But, that is why the buyer, who wants things from this country, gets them shipped to a US address. Because it absolves you of blame (you shipped to a certified address) and lets them buy from sellers who otherwise wouldn't sell to them.