I love YouTube Red but basically never use any of the Music features.

I’d rather have ads on Music and nothing else. Seems like a strange anti embrace of the creator community.

I can only assume they would rather make money off of ads (because they make more money than YouTube red?) and this needed a way to sell the popular YouTube Music (including the background play feature) and have a way to get more people watching ads that were casual users that mostly only cared about music (instead of having ad free YouTube thrown in).

Can’t see another reason to have structured it this way. YouTube Music is obviously an important business requirement to otherwise keep all the labels uploading their music videos onto the otherwise free site.