Besides, you know, being captured and having to be rescued, never interacting with another girl, and being harassed by Han Solo. You're essentially arguing that Leia was "good enough," when she wasn't.
This is extremely poor criticism. It's essentially ad reductum...because why?
Rey's arc isn't the most original, but it's there. From almost the moment we meet her we see that she has a future beyond Jakku but she doesn't want to accept it. Through the course of the film we learn what the future is, a destiny, more like, and by the end she comes to accept that path.
This isn't hard.
How is Leia a bad character because sh e never interacted with another female character in ANH? Leia is written wonderfully in that movie and actually subverts the damsel in distress trope. Princess' in classic tales are supposed to be "weak" and reliant on the hero to save them but from the minute we meet Leia we see she is none of those things and it's her who ends up rescuing the other characters from the prison level. Leia was given plenty characterization in ANH as a side character, way more than our supposed lead in TFA.
Second, while I think this is the last time I'm going to talk about this I agree that Rey's arc is flat or uninteresting. An arc is supposed to take a person from A to B, to show a character's personal journey from what they were at the start of a story to how they end up at the end. Rey's arc is very flat, but this is the problem with shrouding a character entirely in mystery so that we know nothing about their past or motivations. At the start of the film we're already shown that she is brave, capable, and needs no help from others to get by. Yet, despite being shown imagery similar to Luke's arc in ANH, Rey in fact has no desire to leave Jakku as she is waiting on "someone." Who? Why? For how long? We are never told.
All of a sudden she becomes really determined to see BB-8 to the Resistance but we aren't given any reason as to why, hell up until that point we had no idea she cared about the Resistance or despised the Empire. Thus, her personal motivation as to risking her entire life to help this cause which she seems to have no personal stake in doesn't seem to make much sense beyond the fact that she is the "good guy." It's the same reason she immediately saves BB-8 and refuses to sell him, she's the "good guy." Again, this is established right at the beginning of the film and it never changes.
She continues to be the "good guy" until she gets captured, realizes she has some of that hidden power, and then at the end decides to continue being the "good guy" instead of going back to her ambiguous past on Jakku. In short, her arc would appear to essentially be from "good guy" to fully accepting she's the good guy. Like I said, it's very flat.
I like to think back the the Plinkett reviews and Anakin's romance, you can't make the audience care about something by putting up or stating arbitrary barriers between the characters. Why can't Anakin and Padme be in love? Because we're told they aren't allowed to, why exactly is this so bad? We aren't ever given a sufficient explanation. Why does Rey care so much about Jakku? Because we're told she's "waiting?" Why is this so important to her that she can't leave for a second? We are never given a sufficient explanation. It may be answered in the future but we can't wait on the future to judge her story right now and her arc as shown in the TFA is thus flat.
Luke, on the other hand, has a clear arc as a farm boy with bigger dreams and no love for the Empire stuck on a remote planet due to his familial obligations. He meets an old wizard on a quest but is hesitant to join and abandon the only family he has ever known. After said family is brutally slain by the Empire he takes it upon himself to join the wizard on his quest and learn the ways of The Force as his father before him. Eventually through many trials and errors he succeeds in delivering a crippling blow to the forces of evil.
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