I live here and am job hunting now. I've seen very few positions available in Miami, almost all of which have salary ranges lower than remote roles. I'm probably going to move back to NYC or something when the lease runs up, the risk of catching another layoff and getting stranded here if remote fully dries up is just too high.

The meme seems to come from people who dislike NYC/SF cheerleading widely publicized relocations from there to Miami. Tons of VC types moved their executives' offices* down here during the pandemic to take advantage of taxes and basically start their retirement early.

* Generally speaking they didn't move most of their minions out of NYC, so the minions still need to shell out for the rent and taxes.