I understand your concern. If you read the descriptions at the artist's deviation you can see that they are portraying Jesus. A torn doll on a cross is a symbol of Jesus' body being torn for us, I don't recognize it as a voodoo doll. The one with Thor says that after the doll was burned it looked like a Jew - referring to Jesus. I think you should give them the benefit of the doubt. They are using creative means to portray Jesus, and they say nothing about worshiping other gods.