is one piece episode 430 filler?

Some Impel Down guards of Level 6 are talking about how surprisingly quiet it is. One of them says that the people imprisoned there are legendary monsters that have a bounty exceeding 100 million.

The guard explains more about Level 6: Eternal Hell how the only way people leave that floor is when they are sentenced to death. Another guard says that dying for the prisoners is better than being locked up.

The guards are then informed that warden, the assistant warden, and Warlord of the Sea Boa Hancock will be arriving soon.