We don't have a solution for the problem. We have some ideas for minimizing it, but the problem isn't going away. Detectors are unreliable. Pay-to-submit sacrifices too many legit authors. Print submissions are not viable for us. Various third-party tools for identity confirmation are more expensive than magazines can afford and tend to have regional holes. Adopting them would be the same as banning entire countries.
We could easily implement a system that only allowed authors that had previously submitted work to us. That would effectively ban new authors, which is not acceptable. They are an essential part of this ecosystem and our future.
We could easily implement a system that only allowed authors that had previously submitted work to us. That would effectively ban new authors, which is not acceptable. They are an essential part of this ecosystem and our future.