Speaking of random audio ranting:
These days, I'm using all of the following in my home:
Plex for my local music files. This can be nice since I spent a long time going out of my way to collect and rip multichannel audio recordings, but it's also sluggish to use and relies on my home internet bandwidth, which isn't amazing when I'm not at home.
Amazon Music. I bought almost all my music from Amazon and I'm grandfathered in for the 200,000 uploaded tracks on the web player, plus Amazon is where almost all my playlists live. Amazon supports CD quality audio and in some cases supports Atmos sound on some devices for newer streaming tracks. The down side is that Amazon's app and web interfaces suck hardcore. The only reason Alexa is tolerable is the years I spent customizing playlists to do what I want. Amazon Music will also talk to my Plex Server, although it can't handle multichannel music. I'll go so far as to say that Amazon Music is actively regressing to the point of uselessness.
Spotify. It has the best and the fastest app experience. Everything is zippy. Every search, every download. Audio quality is hot garbage. It works OK for podcasts (I use Pocketcasts for that), but if I just want to listen to something where quality is important, it's blown away by everything else. I get my Spotify because one of my customers pays for his employees to have it. Spotify has been telling users for years that it's going to support CD-quality audio since 2019. It still does not do that. Spotify also has the most problems with misidentified recordings IMO. It loves to attribute albums to an ensemble or conductor rather than a composer.
My roommate uses Apple Music, so she's signed in to it via Alexa and on my STBs and AVRs. Apple is also fast and has good quality audio, but
I don't know of any way to to get it to recognize groups of smart speakers or to play on multiple Chromecast outputs, even when those are supposed to be supported directly by Apple. She ALSO falls back on Spotify, though in her case it's because she frequently switches between her earphones and listening on smart speakers, and since she doesn't use a Mac, that's something Apple Music doesn't do properly. It's just a button in Spotify or Amazon and apparently it's all sunshine and roses to go from Airpods to Mac to Homepod and deliberately crippled for everything else.
This is a first world problem, but there's no one streaming audio application that has all of full compatibility and quality of source audio, a good app AND multiple source playback.