Like, even if she were one, I wish they'd atleast acknowledge that she is still a fun and compelling character. Even if you think having that much talent may be bad writing, we have plenty of other characters who are just great at shit with weak justification for why they have those abilities. The entire superhero genre is filled with people who are all super strong, super smart, super capable people and there isn't much justification to it than that they were born that way, or worked hard to be that way, or had some plot device fall on them to make them that way. Why is James Bond able to do pull the insane shit he does? Why is the Doctor able to outsmart everyone? How does has Indiana Jones been able to survive constant encounters with ridiculous opposition. Why is Anakin Skywalker so fucking special beyond that "the force chose him".
It's fun to watch awesome people do awesome shit. There is an argument to be made for why Rey isn't a Mary Sue, but I'm just sick of the presumptuous argument that if a character is talented, they must be poorly written. It's bullshit. It's not some writing crutch to make your character a cool, interesting person who is capable of doing insane stuff. Hell, literature might as well be founded on those kinds of characters. For all that people say complain about her abilities, I've yet to actually see anyone articulate a reason why she'd be more compelling without them. Just the abstract presumption that if she were less capable, that'd make her more interesting, somehow.