I recently picked up a 2016 Macbook Pro (with Touch Bar). I use an external keyboard. There used to be a setting in the keyboard system preferences that "Use all F1, F2, etc. keys as standard function keys". That is no longer an option. Is there a way to get that back?
You can install Karabiner-Elements.
In karabiner-elements Preferences, in the Function Keys tab, there is an option at the bottom, "Use all F-keys as standard function keys"