1 you can still have your decorations up for two or three months. then christmas stays a holiday and not a season.
also, what sorts of drinks are there for christmas? peppermint and eggnog? is that it? i can chew a piece of gum and sip my coffee. eggnog is good but not for three months, it’s literally eggs. eggs can get tiresome. why do you want to rush in a season where your main drinks are peppermint and eggnog? you have to live with that for so much longer than you would.
i think december 1 is an acceptable starting point for christmas celebration. any sooner and you have no respect 