[kiba]

I am not even a rocket scientist but I heard starship was described as a ridiculously hard and super ambitious program. So it's not unexpected that it would take a while for the program to mature.

Falcon 9 was SpaceX's second rocket, but it also underwent several major changes before it becomes the workhorse that launches more than the rest of the world combined.

Again, I have no idea what the difficulties actually entails.