is attack on titan (shingeki no kyojin) episode 81 filler?

As the Walls crumble, revealing the Wall Titans, Eren Jaeger uses the power of the Founding Titan to speak to all Subjects of Ymir. He says he will use the Titans to trample all life in the outside world in order to protect the people of Paradis Island.

In Liberio, Eldians come to their senses after having heard Eren's words. Annie's father realizes that the Titans are coming to kill them all.

Back in Shiganshina District, an injured Reiner Braun limps after Gabi, who is looking for Falco Grice amidst the rubble.