Well, he WAS a child prodigy who published his first major paper at 18 and got his PhD when he was 20, I wouldn't be at all surprised if he actually did independently come up with the idea of hashing at age 13.

In general I think people should just stop being triggered by Wolfram's comments.

Yes, he does go out of his way to emphasize what he feels are his personal contributions.

Yes, in some cases some of his claims do appear to be a bit exaggerated (e.g. some of his cellular automata stuff)

But at the end of the day, he is still a pretty smart guy who actually writes about math/science topics fairly well, and I think that is far more important than raging every single time he gives himself credit for something or emphasizes his own work on a topic.