Blaming them and calling them stupid will convince noone, makes me wonder if you're sane and smart; if you were really angry about this, you would argue about it.
like Clint said: "If you really, truly believe that you, as an atheist, are better than creationists, then prove it by being the bigger person. Be more mature and keep your mouth shut.".
You're trying to make it out like it's something out of the ordinary and amazing when someone believes in the most believed-in faith in the world. It's not surprising at all. Christianity is one of the most sheltered ideas in the world.https://www.youtube.com/watch?v=Y201QzDdzbg