is attack on titan (shingeki no kyojin) episode 74 filler?

Grisha Jaeger and Dina Fritz take their young son Zeke atop one of the towers outside the Liberio internment zone and show him the city they live in. Grisha tells Zeke that as Eldians they are forced to live their lives inside what amounts as a birdcage instead of being able to see the rest of the world, and asks him if he would not like to leave that place, with Zeke replying that he does.