is one piece episode 708 filler?

Law continues his fight with Doflamingo, using Tact to throw part of the castle at Doflamingo, only to be blocked by Doflamingo's Kumo no Sugaki. Law then tries to launch another Shambles, but this time, Doflamingo grabs his right hand and comments that he should not launch ineffective attacks at him.

He states that if Law wanted him dead, he should have pitted him against Kaido and that there are millions of methods to kill someone stronger than yourself rather than let his emotions get in the way. Law states that everything he's done and will do has been to avenge Corazon.