I am the only one to be a bit upset by the term "fake artist"?

While AI is evoked, this is not what is talked about here. The article mentions Epidemic Sound, and looking at their page, it "doesn’t currently use generative AI to create music".

It means that we are talking about real people here, there is nothing fake about them and their work, what they do takes skill and effort. That they focus on quantity over quality and are under-recognized does not make them "fake". Otherwise, I bet most of us would be called "fake engineers".