Where'd the YouTube Music Library disappear to on Android Auto?

Is this an intentional change to YouTube Music in our cars, or is a glitch in a recent update hiding users' Library screens?

I tried Spotify, YouTube Music, and Amazon Music in Android Auto, and I have a clear winner for you

Only one nailed every drive ...
Techno-Science.net

Want to Watch YouTube on Android Auto? This app is for you

Want to watch YouTube on Android Auto? While Google blocks video apps for safety reasons, tools like AAAD can sideload apps such as CarStream and Fermata Auto, letting you watch YouTube on Android ...
Hosted on MSN

YouTube is available now on Android Auto, but there's a major caveat

YouTube is now officially supported by the Android Auto feature found in many modern cars, though users looking to watch videos on their in-vehicle monitor may be disappointed. The premier online ...
Android Authority

YouTube quietly adds Android Auto support, but it's not what you think

YouTube now shows basic playback controls in Android Auto. You can play/pause or skip videos, but you can’t watch them. The feature requires YouTube Premium (including Premium Lite) for background ...