Ahhh, that makes sense!

Your initial comment sounded like you were saying missing Google Music didn't make one lick of sense

Not that google deciding to shut down google music didn't make any sense

I mean, you're kinda describing what they actually did

Google music was less killed, more rebranded as YouTube Music (but they did launch new app UIs at the same time that were missing various features from the old ones,). I've still got the same library of music I uploaded in Google Music that doesn't exist in their standard library, and you can still upload today.

Being able to have my hundreds of playlists from over the years complete with all the obscure remixes and unreleased bootlegs on them, is pretty much the only reason I still use it over something like Spotify

I've heard a conspiracy theory that says that the apps and services that Google dumps were experiments in data gathering and correlation. So basically they make a music platform like GPM, they use it to get a great music prediction algorithm, then kill the platform because what they wanted was the algorithm. They have money to burn so they don't care about one more tiny revenue stream or about making a great music platform.

YouTube music is just GPM continued without the ability to upload your own library.

Interface obviously is different but they've done good refining it over the years where there's nothing I really feel like I'm missing compared to GPM.

Also all the music I uploaded back ~13 years ago (damn) is still accessible in YTM