The companies aren't commenting on the apparent leak.

This could be partly about striking while the iron is hot. ABC, Fox and NBC are all working on music competitions, so Netflix may not want to feel left out. However, it could also be a bid to corner an audiences that aren't usually well-served. You don't really see streaming-exclusive talent shows, and the shows on TV tend to be relatively generic where Rhythm & Flow would target specific genres. It might not attract the massive viewership of an Idol show, but it could build a loyal following that keeps people subscribed -- and that's what Netflix cares about the most.