Interesting how you state two shortcuts to use mute, and suggest you could also use the mute button in the GUI, yet the first two require 3 button presses, the GUI option requires moving the mouse and the Touch Bar requires just one touch!Hate is a very strong word. I do not hate the touch bar. I think that the idea of a secondary screen on a keyboard is not a bad one and I can see how people who glance down at the keyboard a lot would find it useful to have important app functionality quickly and clearly accessible via a touch bar interface.
The trouble with the idea is that there are many of us who do not look at the keyboard and rely on the function keys always being in the same place. I do not often change my keyboard or screen brightness, so I have the function keys enabled by default.
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I use many applications where I am always using the function keys because they are shortcuts For example, F5 does something and Shift + F5 does something similar and so forth. Touch bar functionality is not useful to me. I can rely on F5 always being in the same place and my muscle memory can help to easily find it and not touch something else.
People have mentioned Teams, and other such applications, that include commonly used functions like a mute button on the touch bar. I am not sure how that is more useful than just using the mute button in the teams GUI itself. Personally I just memorise shortcuts. Cmd + shift + M to toggle mute on and off quickly. As a bonus the shortcut is similar when I have to use Teams on a Windows machine (ctrl + shift + m). That, to me, is far more useful than a separate button on a touch screen taking up the function keys.
I think a much better solution overall would have been to find a way to integrate a touch bar into the design without taking away the function keys. When you take away functionality and replace it with something that is arguably not as useful that is regression. I think this is the main reason why some people do not like the touch bar.
Too many have got wrapped up in it being a change they don't like, so lets bag it out. I have found it very useful, for instance I like to use F5 in the old days, now I just do command + R, same thing.