The Action Key or any other button could be literally anything on the keyboard. So I guess setting the LED screens all up to work with whichever button is binded would be hard to set up.
Regardless, I'm pretty sure people aren't going to freakout about it once they realized what the button actually is. And to be honest, I doubt many people would read the LED boards anyway.
Also this reminds me when game tutorials used to say "press the jump button" or "Press the action key"