That is a teensy-tiny problem compared to what has to be done to make a game like Starfield. Go look at the credits. Now understand that each of those teams had weeks or even months where they worked 60-80 hours to solve problems or design things or write or rewrite the story to fit a problem that the programmers can't solve. Now, imagine putting all that work on one dev or even a tiny dev team. And now you know why the market isn't flooded by indie dev games of this size and complexity. There is a reason why so many people involved in games burn out quickly - they are often ground down by the grueling work.
You are also conflating ability to do one thing really well with being able to do all things really well.