What's the point with that quite lackluster story in Endwalker?

[Droxybrobotnik]

What jars me about Meteion is that her motivation does not make sense. Remember, her power is to absorb emotions, not just negative emotions but all of them, meaning that for every world she visited, not only did she see the despair at their ultimate end, but also the hope that enabled the civilizations to endure, the joy in their camaraderie and friendship, the shared exaltation of overcoming odds, all the reasons why the Scions fought against her, so she should have immediately understood their point of view and what they felt, not acted like it has no meaning. It's forcing a negative point of view for the sake of creating a villain, while not being coherent with plain logic, not to mention that it just makes her seem incredibly angsty and immature. You'd think having access to the endless sea of emotions in the hearts of living things would make you mature a lot, but no.

[KageTokage]

What jars me about Meteion is that her motivation does not make sense. Remember, her power is to absorb emotions, not just negative emotions but all of them, meaning that for every world she visited, not only did she see the despair at their ultimate end, but also the hope that enabled the civilizations to endure, the joy in their camaraderie and friendship, the shared exaltation of overcoming odds, all the reasons why the Scions fought against her, so she should have immediately understood their point of view and what they felt, not acted like it has no meaning. It's forcing a negative point of view for the sake of creating a villain, while not being coherent with plain logic, not to mention that it just makes her seem incredibly angsty and immature. You'd think having access to the endless sea of emotions in the hearts of living things would make you mature a lot, but no.

I think the implication that despair was the dominant feeling to the point that it was drowning out what little positivity remained.

There was a small part of her collective that still wanted to cling to hope which is represented by the blue Meteia that appear; one of which is gradually blackened as it guides you through the Dead Ends.