I adore Christmas like when I was an 8-year old, but yeah, here's the same, all the radios and stations have been starting to play Christmas songs in late October since like 7 years ago, which feels somewhat weird and unfitting. Same with Shopping Malls.
However I think I know the reason. When asked in surveys, some people said that the worst thing about the Holiday Season, along with the debts, is that it feels too short. The Shopping malls then decided to make the season longer, starting at November.
However I think they got too fucking far. AT LEAST LET HALLOWEEN END!