Yeah, even I don't think that is right. Should go with a Supergirl villain. Reign would have been a great movie choice but they already did her on TV. They should just make up a villain for the movie. Like they did with Astra or
Rhea for the TV show.
Anyway we don't really know who the villain will be because the script hasn't even been written yet and they don't even have a director. Other reports say it will be a period piece taking place in the 1970s, before there
was a Superman. All kinds of crazy speculation. So people are just getting angry over phantoms.