This might certainly replace humans in the creation of background music in much of today’s online “content” as they state themselves.
But before they know it, the very “creators” using this as the soundtrack to their videos will themselves have been replaced by script-writing AI and text-to speech AI…
I think that the use cases that AI is currently being built for are certainly influenced by the culture (or rather, strategy of the big platforms…) of having massive endless streams of content. We are only really starting to think of the ramifications now that people are putting out efficient tools tailored to this very goal (generating infinite amounts of content on demand).