Yes, creationism is a recent cult. That is why I get so outraged that they claim to be the only true Bible followers. They have no tradition except one of ignorance.
The telling factor is the rise of creationism after WWII. This is because of the Nazi evil and its embracing of social darwinism, a stupid construct designed by evil murderers to place themselves above everyone else. This is not unlike the Bible interpretation of the creationists, ironically.
So, in terms of the authenticity of its "tradition," creationism has as much credibility as Kwanzaa.