There used to be a feature in the youtube app for android to enable background play. It was removed because now they want you to pay for it. That's not to like.

No ads is nice, but useless for anyone who is willing/able to install an ad blocker on their phone. You can promote content producers more effectively by spending the money you would drop on a subscription on buying an album, going to a show, subscribing on Twitch or becoming a patron on Gratipay anyway.

Offline access is nice, but other commentors claim it's "clunky", and if it's not especially convenient, then it doesn't give me anything I havent been able to do for the last decade with youtube downloader apps.

So really all it does is make the mobile background play a paid feature, which is obnoxious.