I think I read that this is a trick by Verizon to make you think that you're on 5G. "Nationwide 5G"
Ah, yeah - basically "5G" simulated on 4G framework:
Verizon Coverage Map: Nationwide 5G and 4G LTE Network Cell Phone Coverage | Verizon
Even our 4G beats their 5G. Use our interactive network coverage map to check Verizon 5G and 4G availability in your area. Find out just how far our nationwide cell phone coverage map spans.
www.verizon.com