So what is the proper name for this thing?
Some would say "Christmas tree," while others would argue it's a "Holiday Tree." I am hoping to explain, in a few short sentences, which one of these I feel is a more correct terminology.
While "Holiday tree" is supposedly multicultural in appear and covers a wide variety of belief systems, it is a bit of a misnomer. There is only one holiday at this time of year that normally involves a tree, and that is Christmas. To call the tree you erect in your home, decorate, and put presents under, anything other than a Christmas tree, you must be celebrating some holiday other than Christmas. And if that's the case I'd dearly love to know what this holiday is called, because Christmas is the only holiday I know of at this time of year that traditionally has a tree associated with it.
On the other hand, it's perfectly okay to say "Happy Holidays" as there's multiple holidays this time of year and it's shorter than saying, "Merry Christmas, Happy Hanukkah, etc etc etc" to cover all of them.
Happy holidays, everybody!