For the last couple of years anything that used to be "Merry Christmas" was actively suppresed on mainstream social networks.Replaced with Happy holidays, whatever.A company adjusting this is fine,obviously(you don't have to repeatedly wish happy X, you just do it one time), however in the case of individuals where it's more common that a person only says Merry Christmas/Happy hanukkah/etc, we've repeatedly seen that such messages get "lost".Again, it's not a mistake, but then again if you point out that facebook actively engages in this behavior through leaked documents, nobody bats an eye.