You need vastly different design parameters for Earth orbit, interplanetary and interstellar craft and masses corresponding to each.

Starship is all about a lot of mass to Earth orbit. This is a little mass somewhere between interplanetary and interstellar design parameters. Yes, Starship could put it into Earth orbit, when expendable probably interplanetary, sure.

And it may well help launch it, but that’s where its relevance ends, it’s at the other end of the spectrum of what you would design for. For example, at this corner of the design space, chemical propellants aren’t a thing.