Yes, and you can have lots of healthy people and still have an incredible bias in your data that wasn't there at the start of all of this:

If we take any group of people in which a small percentage is immunocompromised, and any non-zero percent of those people get the vaccine, those people are removed from the group and you're left with a group that now has a higher percentage of immunocompromised individuals. It doesn't matter that there are still "lots of healthy people" left, your group has become biased towards immunocompromised individuals compared to baseline. Let that happen over three years, and now your group is heavily biased.

In the Florida, like in the rest of the US, a substantial number of people got the vaccine, and have been getting theirs boosters, and the percentage of immunocompromised individuals in the pool that's left has consequently gone up substantially.