I’m rich.

Probably not supposed to work, but in a browser I have some of the premium features mentioned from playing whatever I want, changing the queue to creating playlists - all with a free account. I tried it with different browsers, different accounts and even without uBlock - just works. I still don’t understand why and how. If it is a bug, I hope that they don’t notice/fix it :D

You don’t need the subscription to do all that. At least not in the browser.