They do, but fear saying so, lest they be called a "hater."
At the Santa Monica Third Street Promenade, there are TWO HUGE menorahs. Nothing even remotely resembling Christianity. Just a lot of vaguely holiday white lights, stars and such.
Same thing here in Palm Beach County. Mall near me has blue and white Star of David wreaths. I thought it neat at first that another faith was joining in the celebration until I looked around and discovered there were no decorations which would indicate the Christian nature of Christmas.