is one piece episode 599 filler?

It starts off with Vergo still punishing Law. Law reveals that Vergo is the base commander of the G-5 Marine Base.

Then it cuts to an unknown island inhabited by the G-5 Marines. They are extremely rude and take what they please.

Then the citizens ask if they could look for their missing children, revealing that the children in Caesar Clown's laboratory were in fact kidnapped from this island. The Marines refused to help because they said Vergo already looked over the missing reports and said they have all died.