Partial disagreement.
While Rey is definitely a spotlight character, we don't actually know who Poe is, aside from being a rebel who has potential for greatness... maybe. He's barely there in FA and is attached at the hip to Finn in RoS. The only film where Poe gets decent airtime is TLJ. Poe, while he did have potential to be a good character, got shafted.
Looking at Rey, on the other hand, we see her constantly throughout the films but her character needed much more refinement and is all over the place.
The one main character who had a good arc is Kylo. Kylo's character is amazing and I love what they did with him. The other 3 all have many issues.