So, their incentive is to promote AI music, since they don't have to pay royalties for them.
But "creators" pushing AI music won't tag their slop as such because they want to monetize (surprise, they're not doing it for the love of the game).
So this hinges on Tidal being able to reliably identify AI-generated music.
In reality, I don't think this is how it'll shake out. But it's a valid argument.