You weren't even able to skip to the next song, like you can on the old function keys. Play & skip to next song are probably my most used buttons, one of which never stand-alone existed on the Touch Bar.
I think it would have been better accepted if Apple make it more customizable right out of the box, instead of relying on half-baked solutions from tinkerers to program it.
In my opinion, it should also have been in addition to the function keys, not a replacement.
Hence, it's a nuisance. Not something I go insane about like some do, but it is a very definite day-to-day annoyance.
Same. The short time I was exposed to the touchbar it felt like I was constantly being berated for my keyboard posture. Apparently the "at rest" position of my left hand leaves my middle/ring fingers hovering over the escape key (I had the earlier model that didn't have a physical escape key).
Not to mention losing access to the physical f-keys decimated my custom hotkey usage for certain software.
I think it's mildly disappointing and I won't miss it.
I'd imagine changing brightness or sound volume + mute/unmute only with on screen controls and/or keyboards shortcuts could work, but that's a lot of shortcuts to remember for stuff that are only done a few times a day.
Hey, Apple: why not just lose the touch bar and make the whole screen taller and touch sensitive instead, huh?