Why do creationist think that evolution says.....?

They don't want to understand, because deep down in their hearts they know their 'logic' can be crushed by science. If they honestly believed in the truth, they would have no fear of learning it, regardless of where it takes them. They have been convinced by the church and their faith that they are too stupid and will be led astray by their stupidity. That is why they seem like idiots while not necessarily actually being one. The Bible teaches them that it is wise to be simple-minded, and they don't realize that those outside the faith aren't confounded the way they think they are. We are confounded (confused) by how marvellously blind believers can be.