Look. I wanted to change the volume. My hand went to the keyboard. I felt the key. I felt the key press down. The volume changed.
That's all the feedback I need! I don't need my vision stuffed with that information.
But yeah, it did look cute and should be an option between "Expressive" or "Minimal" UI.
The issue arises when my output is not what I think it is or the audio is otherwise not being adjusted (happens a lot when your pushing through an HDMI output). It could be going out my speakers, my headphones, or something else entirely. So when I’m pressing the volume up and down trying to see what is going on, I don’t want to have to squint at a very tiny set of bars in the top menu bar. That is annoying and far more distracting than an opaque layer that gives me clear information showing up for 2 seconds.
At the end of the day I want Apple to adhere to the “it just works” philosophy. That little pop up served as a critical source of information I needed daily that tells me more than just the volume level. It’s easy to understand, it’s been consistent for I believe two decades, and it provides information to multiple questions instantly. It did not need to be changed and what they changed it to is worse.