is one piece episode 634 filler?

As Cavendish attempts to talk to Lucy, he is ignored due to Lucy's attention to him focusing on the weight limit. Luffy then asks why is everyone almost naked, to which the prince explains that the spectators want to see blood and that in the arena you can see humanity's true colors exposed.

The prince then asks Luffy who he is. Luffy tells him his real name and exclaims that he is going to be the Pirate King, drawing attention from the crowd.

However, they see that his name tag states Lucy and assume he mispronounced his own name.