Eren is great because of character development not foreshadowing

I read a lot of " foreshadowing" phrases that people use to predict the AoT ending like the " Armin will save the world" or the " I will destroy the world form Eren".

The greatness of AoT is not based on 3 random phrases to explain the characters decision, This is not GoT season 8 where using a season one phrase is enough to justify a character decision.

Eren's development is based on suffering, anger, and self-reflection. The decision to destroy the world is a natural evolution of his character made by his actions, not random words.

I hate when people put in the same sack character development with foreshadowing, they look back at the " I will destroy the world " and say " oH lOok tHat's wHY hE is dOInG it ", ignoring all development and summing everything up in one sentence that doesn't even have a single meaning.