is one piece episode 191 filler?

Enel, being the first one to come across the great Belfry, calls it magnificent even though it is covered in vines and slightly tilted. Meanwhile Luffy, is trying to climb the vine but slips.

Nami tries to convince him that he can't make it. Determined, Luffy takes Nami's waver and drives it up the bean stalk.

Luffy falls but his will doesn't waver. Down where the others are, they get a message written on a leaf telling them to cut down the beanstalk from the west.

The people from Skypiea tremble in fear as they look up at the ark surrounded in clouds.