Starship is currently at the "doesn't always explode" stage. They still have to figure out refueling in orbit(multiple times), landing on the Moon's surface, and how to get the astronauts from the top of Starship to the surface. And they still have design and build a Starship that can carry astronauts.

Delayed by a year? Lucky if they manage to work all of this out in five years.

Way too complicated. It needs to be more like the Apollo missions.