You are blaming the victim. OpenAI is to be blamed.
They know what they are doing. They provide something that sounds over-confident for anything it says, knowing full well that it can't actually know if what it generated is accurate because it is designed to generate plausible sentences using statistics and probabilities, not verified facts from a database. On top of it, they trained it on an uncontrolled set of texts (though IIUC even a set of verified text would not be enough, nothing guarantees that a LM would produce correct answers). And they provide it to the general population, which doesn't always understand very well how it works and, above all, its limitations. Including developers. Few people actually understand this technology, including myself.
Inevitably, it was going to end up causing issues.
This post factually presents a problematic situation for the authors of this post. How ChatGPT works or how it can end up producing wrong results is irrelevant to the post's authors problem. It just does, and it causes troubles because of the way OpenAI decided to handle things.
And it's not "fair enough, because this false stuff can be found on the internet".