Actually you are wrong there too.
I can't be wrong there
too as I haven't been wrong about anything else. And, as I explain below I'm not wrong about this either. You are just choosing to use "density" in a way that wasn't intended and makes no sense in context.
And, by the way, I have eight superchargers within 100 miles of me, not twelve. Not that I'm complaining. But your arguments would hold more weight if you got your numbers right. And speaking of numbers...
CA has 163,700 sq mi and 34 chargers. 1: 4814 sq mi
FL has 65,700 sq mi and 11 superchargers. 1:5977 sq mi.
Where do you get these numbers? Florida has 13 superchargers, with another one likely to open next week. And seriously, you're looking at total area? Water area and unconnected islands just don't matter. In fact land area doesn't matter. What you care about is linear density of superchargers along roads. So the fact that your numbers are all wrong doesn't matter all that much because your calculation isn't useful anyway. For example, for Alaska you don't need many superchargers to cover the whole state as it just doesn't have all that many roads despite its huge area.
And linear density isn't enough either, although it's a fair approximation. What you want is to have a supercharger in range wherever you might be in your car, so you care that they are well dispersed too. Right now, wherever you might be (in a Tesla) in Florida and wherever you want to go there's a reasonable way to use superchargers to get there. At least it looks that way to me. Linear density along highways is good and useful dispersion has been achieved.
This is not the case in California. For example, the drive from Santa Rosa to Crescent City (I use this example because it's a drive I would like to do but can't) is over 300 miles with no superchargers anywhere near the route. Lake Tahoe to Mammoth Lakes can't be done (this should be fixed by ski season). The whole part of the state north of Sacramento is ill-served, except directly on I-5. You can, if you choose the right starting point, get to Yosemite. But you aren't getting home, at least not by superchargers.
So yeah, pretty much everywhere could use more superchargers, even Florida. And it will just become more true when we have Model 3 Teslas everywhere. Tesla has quite a buildout in progress. My feeling is that they are using Florida and California (and Germany) to test charging dynamics and driver behavior for relatively dense supercharger provisioning. In many other places they are testing how it works when superchargers are placed only along major travel routes. As the network matures they'll work out the best way to do things. And there will be lots more Teslas on the road, and there will be lots more superchargers.
And people will still be complaining.