They shouldn’t be questioned at all. Their opinion does not matter.
It matters if the powers that be make the claim that they can’t acknowledge Christmas cause the Muslims are offended.
The ones agitating for the muzzling of religious expression in the public square are the same ones demanding crowning of the gay agenda.
I don’t doubt that some objected to Santa Claus specifically but that is not a valid reason to stop having him visit the children. Any parent is free to tell their child “We don’t believe in Santa Claus, that is a man in costume pretending to be Santa. Don’t tell the other children cause it would spoil their fun.” I mean Head Start must have had a JW or Jewish child attend at some point.
Head Start should grow a set and say “We know seeing Santa makes the children very happy.” If you don’t want your child to see him then you need to make other arrangements for her on the day Santa will be here.” I guess they could set up a Santa Free Zone but even that to me is too much of a concession.