I just got a new M1 Macbook Air, and they changed a few of the function keys. F5 and F6 now toggle Dictation and Do Not Disturb instead of adjusting the keyboard backlight. I installed karabiner-el...
github.com
disable the "adjust keyboard brightness in low light" setting
map f5 to illumination_down, f6 to illumination_up
Really dumb of Apple to change these to Dictation and Sleep mode
Discovered it myself, that this functionality is no longer there, when I got my M4 MBA. I don't understand why I can't use something like alt-f1 and alt-f2 for it. Enabling a toggle in Control Center or adding int to the menu bar and navigating there by mouse adds extra friction and clicks. Time to send a feature request to apple.