Starship isn’t an actual starship, though.

Indeed, but the parent used a capitalized "Starships".

In any case, I think Starship's engineering, and particularly the Super Heavy booster, is bringing us a significant step closer to starships (in lower case).

Putting the capitalized 'Starship' in the same sentence with a cancer cure and superconductors plays 'One of These Things (Is Not Like the Others)' in my head.

Not a starship