I disagree, Spotify has been very stable and performant for the last decade I’ve been using it. That speaks to decent software development. UI/product shifts are sometimes eh, but the core library has everything you expect from it. Music discovery tools are decent. I’ve tried Apple Music & YouTube Music on and off over the years and they aren’t better.

Adding a song to the queue on my phone is two taps away (3 dots > add to queue) or just swipe right on the list item. On desktop it’s one of the top options when you right click. It’s really not that bad.

The chief complaint is that the home page changes frequently and is hard to navigate, which is fair, and also pretty typical for tech companies. But all I really need is library & search, which are front & center without that.