Hi Ezra! thanks for the question - a good one!
I essentially wanted people to avoid giving written instructions in the game, so they focus on teaching the player how to engage with the game in less direct manners.
In this case, WASD / ESC isn't too bad, because its not explaining game mechanics or what to do, more just an accessibility thing. But if you find a way to avoid it, I'd be interested in seeing what you come up with!