Are you taking that as me saying that they “learn in the same way” as in…by using their eyes to see it and ears to listen to it? You seem to be reading waaaaay too much into a simple sentence. AI “learns” by consuming the content. People learn by consuming the content.

It applies based on similarity whether you mention the original author or not.

That’s if you’re recreating something. Writing fan-fiction isn’t a violation of copyright.