From my other post, 84% of the fatalities were people 65 and over. That is with them taking more precautions. You're not going to reduce cases appreciably faster by targeting the people in the more likely to spread it age group because of the limited vaccine supply.
If you were to hypothetically have given all doses so far to all people in FL 16-55, you'd have begun the series on approximately 31% of the "spreading age" population. That is less than half of what would be required to get to herd immunity. Vaccinating 54% of the 65+ population has saved a lot more lives.
Targeting 65+, you'll get to 100% (of those who want it) protected several weeks before you could get an appreciable decrease in spread from the "spreading age" population, just based on doses available. Let's say FL is averaging 130 deaths per day, every week sooner that you can cut out 70% of fatalities (based on a realistic acceptance rate of the vaccine), that is over 600 lives per week saved for every week that it would take for the "spreading population" to get to some kind of pseudo herd immunity.
In this exercise, it is unrealistically assumed that the 65+ population doesn't spread it amongst themselves, which they certainly do.
To me, it is settled. If the goal is to reduce the most serious impacts as quickly as possible, the only way to prioritize a limited vaccine supply is to target 65+ and people deemed extremely vulnerable by a physician first.