Para quem estiver interessado em uma boa explicação para a motivação do jogo, encontrei na Steam Discussion esse post (citado do Reddit, por sua vez), que pra mim esclareceu bastante o que o autor quis dizer e que fez bastante sentido.
Quote from a reddit user:
"Davey represents post-StanleyParable Davey and his past self's need for validation. Coda represents early Davey's way of thinking about making games. The creative machine also represents early-Davey, but it stands in for the dreamy self-motivated early Davey when Coda hits the creative wall. I wouldn't be surprised if some of these games were made before StanleyParable, but I doubt the later ones were.
I'll skip over the meaning of the word 'coda' and the blog post Davey wrote post-SP.
Consider the fact that Davey "didn't know Coda" when he first started making games. Now recall the telephone call on the last prison level. The future-prisoner tells the past-prisoner that he stays the same person but "doesn't know himself yet." (In some variation of the conversation at least).
There's a message from Coda to Davey to "stop putting lamps in his games." Davey said that the lamps gave the games a defined end point, a purpose. This represents Davey's struggle between his pure creative self wanting to make games as a dialogue with himself and his need for external validation. Coda/the creative machine doesn't need to give games direction. But Davey craves validation for his work, and so gives them direction to make them playable. Davey also mentions that him and Coda often argued about whether or not games need to be playable. Since Davey is the part that craves valdiation, of course he'd want games to be playable. Coda is the creative internal-voice though, and doesn't need that validation. So they don't need to be playable at all.
The three dots likely are something that fascinated Coda/early-Davey because they had no meaning. He put them in his games as a signature. The part of Davey that needs validation and meaning doesn't like that they don't have any at all."
Other important facts:
Aswell the credits "For R." are for his BEST real life friend Robin Arnott. In a presentation at a university he says that his friend Robin said because of Daveys depression "when you are around I feel physically ill". This same sentence is in the game aswell.
Davey got a hard time after Stanley Parables success and this game is how he is helping himself to turn his depression into something good.
TL;DR: Coda = Davey, Game= the story of his depression and how he is fighting it.
The Beginner's Guide