I don't understand that any more than I do decorating too early. Why wait until the day before the holiday itself to set up decorations, only to take everything back down again just a couple of days later? It makes it seem like a wasted effort, if you ask me.
As I've always said, each holiday should have its respective month to be celebrated, without other holidays bleeding in: October is for Halloween; not Thanksgiving, not Christmas, just Halloween. November is for Thanksgiving; not prolonged Halloween, not early Christmas, just Thanksgiving. December is for Christmas . . . I think we know where this is going.