He can't, because he's emotionally invested 100% in pride of his writing. I'm not saying he doesn't deserve to be proud, but it's pride that keeps him from farming out the writing while keeping absolute-dictator control of the approved product.

Seth McFarlane won't make another season of The Orville for the same reason: he has to write each episode.

The Conchords TV series ended because it was too much work to write new songs for each episode.

Each is reasonable, yet unreasonable.