The Ship of Theseus was originally proposed as a paradox, not a question of where subjectively to draw a line between the identity of objects. Like most paradox

The Ship of Theseus was originally proposed as a paradox, not a question of where subjectively to draw a line between the identity of objects. Like most paradoxes it is the result of a flawed assumption. Here the assumption is that there is a Ship of Theseus. If we assign a definition to "Ship of Theseus" then the question of whether a given object is a Ship of Theseus is trivial. But the paradox assumes there is a Ship of Theseus object on its own rather than a definition of Ship of Theseus. The subjective question of "when, generally, should we consider the Ship of Theseus to be gone" is a separate and arbitrary question.