That’s fair. It’s not on the General Calendar, so you’re free to take it or leave it, according to whether you judge its effect on your family to be good or not. That’s the parent’s job.
I don’t see it as a celebration of a demonic forces, though. I see it as a refusal to be in any way dominated by fear of those things that pretend power they do not have. I have no fear of death, and so I have no fear of skeletons or bloody injuries. I have no fear of black cats or people who have odd looks or black clothing. Dress up as scary as you like…I know better. I see Halloween as a sort of the opposite of the Salem witchcraft trials: that is, as a refusal to get hysterical when evil tells its lies. It is all Hallow’s Eve, and the day after shows where the power really is!
Still, that is just my take on it. I can understand the other side, particularly since evil is already glamourized very much these days. The Church leaves these questions up to us because this is in the province of the parent in a particular home and a particular culture to decide. That is why unless a particular culture pointedly made local observances of Halloween into an anti-Christian holiday, I don’t expect the bishops to direct this one way or the other.
As an example, I could understand it if the Archbishop of San Francisco advised Catholics to stay away from adult Halloween observances in that city. Those are so blatantly anti-Catholic and so blatantly celebratory of serious sin, and particularly so vulgar and hateful towards clergy and professional religious that it is hardly to be believed. If a priest in his clerical clothing couldn’t be seen at an event without being openly taunted or thought an enemy of the Church, that’s an event that conscience requires us to boycott!