The YouTube Music UI fails at very basic things. Play a track that Google seems is "for children" and you are unable to navigate to another track or browse with

The YouTube Music UI fails at very basic things. Play a track that Google seems is "for children" and you are unable to navigate to another track or browse without it stopping playing, because the service inherited YT's clumsy COPPA compliance solution. The UI can't cope with long titles. It uses space badly. It doesn't surface content well (no Christmas playlist on the front page during December). It's a UI mess. I tried switching my family to it since we pay for YT Premium anyway and faced a total revolt.