Maybe all inhabitants of SB who were from the EF (or any other land) were just split and copied over to the EF. So hook and the others may not have been affected by the first curse, but they would be by this one. But that begs the question of why Emma isn’t there… Oh wait, no. Snow could be pregnant with Emma in the EF rather than the new Snowflake…
Also, maybe Hook is shooting scenes in both EF and New York. He could have found a portal? Idk >> but I like this theory
"I could have the giant duck as my steed!" --Daniel Radcliffe
Keeper Of Tamara's Taser , Jafar's Staff, Kitsis’s Glasses , Ariel’s Tail, Dopey's Hat , Peter Pan’s Shadow, Outfit, & Pied Cloak,Red Queen's Castle, White Rabbit's Power To World Hop, Zelena's BroomStick, & ALL MAGIC