Buncha twerps in the star wars fandom are taking the line that Rey is "innately powerful, innately moral, innately good" as proof that she's a "Mary Sue." That is not at all what that concept means. Also it would make plenty of beloved fictional characters like Jesus "Mary Sues"
Society tends to kill such people, or otherwise neutralize them. No one wants to watch a story about a homeless person trying to be ethical, and their origin story is even less compelling because it's an inverse cindarella story with an implicitly anti-moral lesson