Yes!
Since literally everything Peanuts related not made in the 80s uses it (and it was used in the 80s, too, just not as consistently) - including, as has been mentioned several times in this thread, insurance commercials - it didn’t originate in the Christmas special, and it wasn’t used in a specifically holiday-related context in the special.
Absolutely nothing about it lends itself to being a holiday song.
Right, oh yeah, except for the whole reason why it became known as a great song, and for what associations were made by the quality of the work.
I hear it the same as sleigh Ride
or my favorite things.
or baby it’s cold out side by Ray charles and betty carter.
Hey wait a minute. Are you saying a holiday song can’t be as happy as that?
Kind of ironic that it isn’t, considering that it was written by an elfman…
As has become my own annual tradition, resurrecting this thread to see if there is any further discussion. I discovered after the fact it had become a Spotlight thread on the main page last year which I find great.
I am going in mid-Dec to a jazz concert of the “Charlie Brown Christmas” pieces and am pretty gosh darn excited 
Resurrecting this thread for the holidays. If it doesn’t generate anything new I will let this one rest after this year probably.
Nah. Linus and Lucy is the the dang theme. It’s in every soundtrack, plus it gets licensed out to companies that use Peanuts. I’d just as soon call it “MetLife Music”. I learned many of the Guaraldi songs for the piano, and if you asked me to play a peanuts christmas song, I’d start with “Christmas Time is Here”. I wouldn’t even think of Linus and Lucy.
This is 2+ year-old quote - but I would point out that Charlie Brown is a blockhead, and hence perhaps not the best arbiter of what is Christmas music.
Four years late, but since the thread rose from the dead… While I can’t speak for Oz, here in NZ we certainly suffer from something of a split personality around the Christmas holidays with our seasons six months out from the traditions inherited largely from the UK.
While some of the traditions have changed - food is more often BBQ and cold beer than turkey and eggnog - some of the trappings remain firmly northern hemisphere: with the temperature in the 70s and 80s (and the humidity in the same range), the malls are getting decorated in fake snow and winter finery and the speakers are belting out songs about sleigh rides, jingling bells, figgy pudding, and Good King Wenceslas heading out into a blizzard while we begin worrying about sunburn and heatstroke.