No, that is untrue. I hate this kind of defeatism.
It is true by a simple count of cameras, most in Florida remain. But that is not the right metric, unless you planned a tour of every Lowes and Home Depot and w/e in the state. Getting them off the state highway system is a big deal. And more and more cities are starting to terminate contracts too.
Just because the whole problem isn't solved in a single stroke, does NOT mean we should minimize how important each step is.