While an emulator does not infringe on copyright and is illegal per US court precedence, an emulator being available is a large part of what makes copyright infringement popular and as such it is related.
Adding in the DMCAs anti-circumvention provisions and the fact that you have to violate them to emulate a modern console, the whole thing becomes very nuanced and tightly linked to copyright infringement despite not directly infringing.
While an emulator does not infringe on copyright and is illegal per US court precedence, an emulator being available is a large part of what makes copyright infringement popular and as such it is related.
Adding in the DMCAs anti-circumvention provisions and the fact that you have to violate them to emulate a modern console, the whole thing becomes very nuanced and tightly linked to copyright infringement despite not directly infringing.