True, but you could say that about most of the places they go.

Most of the islands they visit their "purpose" is to just get to the next island.

It is funny how, getting to Raftel is supposedly just a matter of following the log poses to their end, yet everyone gets bogged down in the New World and never ends up getting there, and now that's exactly what's happened to the Strawhats.

I wonder if all the places Law is dragging them is even towards the end of the Grand Line or not.