But my point is there was no indication it’s how Rey felt when she admitted “They were nobody.” There’s nothing that contradicts this as truth when we do get to that point in TLJ. If there was a hint that it was what Rey believed in TLJ, then I would agree with you.
But they were nobody. Even TROS confirms that. It is what happened and why they left that what Rey imagines is more imporant that reality for the plot of TFA and TLJ. But in TROS we learn the truth and it furthers the story rather than reframing.
And I pointed out before that Star Wars is a fantasy. It doesn’t really have to be accurate to real life.
But the best stories echo real life. Especially in fantasy.