I've been thinking about this, for a while now.
In December, do you wish people a "Merry Presents Day"? In the spring, do you tell people to have a "Happy Hard Boiled Egg Day"? In mid-summer, do you wish someone a "Happy Fireworks Day"?
Probably not. So why wish someone a Happy Turkey Day? It's Thanksgiving.
I used to do this. I heard it, on the radio, back in the 70s (I think). DJ was using the term, and I just thought that was so cool. Turkey Day.
But, over the years, my attitude has changed. Maybe I'm just getting crotchety. I still celebrate Washington's Birthday. Don't believe in President's Day (don't celebrate Lincoln's Birthday, either, but that's a political choice on my part). It's Armistice Day, not Veteran's Day. It's not Happy Holidays or Season's Greetings, it's Merry Christmas. And it's not Turkey Day.
I'm not offended by folks using the term - don't get me wrong. But I do believe they are wrong.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.