If FL and CA were the same in all other respects you might have a point. As it is, you don't.
Lockdowns reduce the number of infected people. They don't eliminate the virus, they prevent hospitals from being overwhelmed, they buy time for vaccines to be developed and deployed and they get the levels down to where testing programmes can be effective.
Yes, you're right, FL population is older and more susceptible. They should have higher rates of infection and death considering how lenient they were.
But anyway, lockdowns dont work! Or should I say lockdowns maybe work, just that people wont actually do them even if they support them.
You see, as someone on the right, I, unlike you, realize that human nature is unchangeable. You can not manipulate the laws and eventually reach utopia, just like you can not put in place lockdowns and expect people to stay at home and never seek company. People will seek and enjoy in the company of friends and family regardless of how much you lockdown, and that is the fundamental flaw in the lockdowns.
So instead of allowing people to enjoy company outside, where the virus does not spread, CA inadvertently caused people to enjoy company inside away from prying eyes, where the virus spreads easily. That is all they did, and as much as you piss and moan over it, human nature will not be changed.