The foreshadowing for this moment is more clear in the manga, Notice where Grisha is looking : r/ShingekiNoKyojin

What are some attacks on Titan foreshadowing? - Quora

336 best Grisha images on Pholder Titanfolk, Shingeki No Kyojin and Okbuddyreiner

predictions – THE REVIEW MONSTER

Shingeki no Kyojin – The Final Season – RABUJOI – An Anime Blog

porco galliard – RABUJOI – An Anime Blog

Is there any Attack on Titan analysis that proves the ending was great? - Quora

10000 best r/shingekinokyojin images on Pholder

brainwashing – RABUJOI – An Anime Blog

Attack on Titan” is a true art of foreshadowing! - Nerz - Nerds providing Otaku info

Holy shit, this is the mother of all foreshadowing : r/ShingekiNoKyojin

Attack on Titan” is a true art of foreshadowing! - Nerz - Nerds providing Otaku info

Rewatching AOT. It's nice seeing all these foreshadowing in the early story : r/ShingekiNoKyojin