People like to be offended and will ruin things for other people. It's sad that we're in such a sensitive society but tolerance isn't what is practiced, sensitivity is.
As a Christian I find the idea of Santa offensive, honestly. Santa and his powers (as presented in media) are a replacement for God. I'm not going to go crying to anybody because they have Santa as an icon.
In the US, sure. In many other countries the related symbology is still heavily linked to "Saint Nicholas", not "Santa Claus".
I don't think that Santa Claus, the mythological person who lives at the North Pole and has elves to make toys, is venerated by any Christian denomination.
Don't forget getting children drunk on rum eggnog made from molested cows and unfertilized dinosaur descendant's ovums.
He's literally a saint in every form of Christianity that has saints.
https://en.wikipedia.org/wiki/Saint_Nicholas