I do think it should be fought.
I just think the chance of success is greater by changing the character into something not race related than it will be to get rid of the character all together.
That's why I brought up the Christmas elves. Because they are in fact the same character in a different skin. The basis of both Sinterklaas and Santa Clause is Saint Nicolas patron saint of the children. They work all year to bring presents to all good children of the world. You do stockings, we do shoes. You do candy canes, we do spiced little cookies. We both do chocolate. We both do presents. We both do "be good, or else". Or else to you is coal, to us is a bunch of sticks (both things one can use to heat a household during winter)
I see no reason why we can't make Piet something like an elf.