The bigger issue is that they claimed no AI was used. That’s an outright lie which makes you think if you should trust anything else about it.
> And honestly who cares, either it is a good ressource for learning or it’s not. You have to decide that for yourself and not based on whether AI helped writing it.
You have no way of knowing if something is a good resource for learning until you invest your time into it. If it turns out it’s not a good resource, your time was wasted. Worse, you may have learned wrong ideas you now have to unlearn. If something was generated with an LLM, you have zero idea which parts are wrong or right.