^Rey finding self worth for herself alone, would still serve Rey better than the ol’ friends-and-family-help-me-realize-what-it is-vaguely. You’re Not Alone and being validated by everyone, is not the same as accepting Being Alone and trying to make something out of it. The fact that she even has something tangible to reject to find purpose already takes a lot away from her TLJ arc.
There’s really no justifying this imo - Rey Palpatine is a completely different arc, and if you think otherwise I don’t know if you understood the ethos of TLJ.