Does anyone know if this so-called union is an actual union? As in, do they collect dues, do they represent a substantial % of artists, and do its members already collectively bargain with Spotify and similar publishers? If Spotify says no, do these demands have any teeth?
Actually, I believe it would be a guild, as artists are not actually employees of any particular label or service, but just contractors. I also thing Guild is a far cooler name, but that's beside the point!
As for your actual question, no I don't think they are. They seem more like an advocacy or lobby group
It looks like yet another cosplay of 20th century labor politics, but with the typical 21st century twist of diverting the fight from those who wield power to... the paying customers, for whatever reason.