“The notion of the ‘Big Sort’ … is really proving itself,” said Matt Isbell, a Democratic elections analyst.

(bold added for emphasis)

Maybe he’s in on the joke (?)

Edit #1:

I was being sarcastic, and thought the context was obvious.

Edit #2:

effectively re-disenfeanchising almost 775k of them for being too poor to pay for their own incarceration and enslavement.

That’s more than two and a half times as many as the total population increase of Florida last year

Yes, last year. But the article cites a multi-year trend:

Since April 2020, nearly 819,000 people have moved to Florida from within the U.S.

The reasons for Florida’s Democratic-to-Republican swing don’t necessarily have to be either one or the other; they can be both, which in this case they are.