There are at least 3 topics about this on the most upvoted ideas for about two months already and no response from any of the representatives. Instead of posting irrelevant Top 10 Lists how about you just give us an answer, because I've seen many users giving up on the service, subscribing to apple music etc. and despite being a huge appreciator of Spotify for it's convenience, this new interface not only threw my artists library on the garbage can, but made me deeply lose the interest in using the app because what is the point to save distinct songs from distinct bands if I can't even listen to them without having to do the extra work of creating a single playlist for that. Stop ignoring what people are saying and start dealing with this huge elephant in the room or I'll be forced to find another streaming service which serves me right.
Here are some of the posts that pretty much says the same thing, in case you didn't understand yet: https://community.spotify.com/t5/Live-Ideas/Your-Library-Bring-Spotify-s-old-UI-back/idi-p/4674895
Updated on 2019-04-12
As you mentioned, a similar Idea has also been suggested, and only one thread can exist per idea:
If possible, vote for it, and add a comment there, so it may be considered. Any update on the matter should be posted there.
For more info on how the Ideas Board works, click here. :)