You can make the same argument polls don’t matter because they aren’t actually real like election results and donation numbers.
Polls have way greater predictive value than past results and especially fundraising figures, especially in areas with a large number of high-quality polls (virtually all the battleground states down the stretch + the national polls).
As for the re-alignment narrative, I’m not sure why you don’t buy into it. I’ve made posts detailing why I think it’s real, but I guess only time will tell.