But Rey is a Skywalker now. That was the message I thought came across at the end. Family is not just blood. Adoption and all that.
But the film undid the last film and made her a Palpatine. Not a Skywalker.
How is this an arc that began in Episode 7?
I don’t think it undid it at all. It was more of a continuation of her journey. In TFA Rey learns she has more to offer the galaxy than waiting for a family who will never return. In TLJ, Rey learns it’s not important where she came from or who her parents were. In TROS this acceptance enables her to ascend her heritage and choose her own story to ultimately find the family she has been looking for.