“Better be nice! Santa’s coming to town.“

Doug the human is resistant to the notion that the only appropriate Christmas greeting is “Merry Christmas“, and he prefers and uses “Wishing you a blessed Christmas“.
Compare:
merry = cheerful and lively;
blessed = made holy; consecrated.
Seriously, which word better defines the significance of the birth of the Christ Child? Make your choice but consider this: the commercialism of Christmas is the war on this holy day, not some catch phrase you don’t like as well as another.