I'm skeptical. The 2020 Winter wave started in October. But cases were decreasing of flat Oct. and Nov. with barely any mitigations in place. There was some sign of an increase in very late nov. and early december. Whether that is an early sign of a wave, a thanksgiving bump, or signs of Omicron spreading, it's hard to tell.
But it Florida and the South had a high degree of immunity to delta even pre omicron.
The 2021 Summer peaks in the south were much later than the equivalent 2020 summer peaks. In 2020 Florida peaked in mid July. In 2021 they only started coming down in Early September.
This would push their winter peaks back as acquired immunity would fade at a later point.
But it Florida and the South had a high degree of immunity to delta even pre omicron.