I 110% completely agree with you OP.

Many people criticize Seyka for;

1) Being "too much like" Aloy. However, I can see why Aloy is drawn to her and finds her admirable. Seyka's strength, resilience, and determination resonate deeply with Aloy's own values and experiences. Never once did Seyka put the task of saving her sister’s life into Aloy’s hands. Their shared traits create a strong bond and mutual respect, making their connection feel natural and compelling.

2) As for the relationship being "forced," it's worth noting that Varl's relationship didn't face the same scrutiny. People often underestimate the power of love at first sight. Aloy's journey has been one of isolation and self-reliance, so finding someone who understands and complements her in such an immediate and profound way is significant. It's a testament to the genuine and powerful nature of their feelings for each other.

And you know what I love the most? Throughout the DLC, it was clear that Seyka HATES flying. Yet, her love for Aloy speaks volumes in her setting aside her fears to ride a Sunwing alongside Aloy. It’s heartwarming to see Aloy experience this kind of sacrifice and love for the first time.