Can God be a useful "scientific" hypothesis? Yes

Yes, for starters because the quote said that it was a model. Your misrepresentation of their conclusion did not include that.

The authors never, ever claim that their model demonstrating a primitive cell cycle is sufficient to demonstrate “how lifelike cells emerged from nonliving matter,” the words you put in their mouths.

Do you think that your genome includes any genes that are involved in making arms, but not legs? Vice versa?