Additionally, to this "Daron wanted the ship to happen until the very end" can't actually be called as the total truth, because of her own words during the years.
In 2016 Eden sheer herself (as Star's voice) made it clear that she had talked with Daron about Marco and Star and the intention they had at the time was that Marco and Star were nothing but friends.
It was not a distraction or trick to misguide people, the interviewer only brought the question as a "what will happen with these two" and Eden gave a long explanation of how she (from the beginning) felt that Marco and Star were like herself and a good male friend she has.
You have to understand faggot, at the early stages of SVTFOE they were not looking to make couples, Daron rejected and apparently didn't want the focus of the show to be a teen romance, her deaire was to make a show with adventures, or so was her constant talk when explaining her show. I strongly believe that this "Marco and Star should be a couple" came later on during season's 3 development or perhaps during the hiatus after season 2