People claim Gunko-Imu is but the issue with this is Luffy objectively doesnt beat the shit out of clear victims, especially those that are women. Even when he fought the Kuja it was in avoidance and Hancocks sisters basically hurt each other.
Call it Oda's sexism or whatnot, but he doesnt generally have Luffy hit women outside of two very early points in the story, even including Big Mom.
Now that leaves 2 other options:
- Oda repeats God Valley with Loki being Domi-Reversi'ed, so Luffy finds a way to help him. In this way, Loki is a victim but he's also a male ancient giant
- Shamrock is called back
Either option makes sense imo, but Id 100% prefer the latter one because saving Loki does nothing to resolve a particular villain this arc. Imo all the exposition the Figarlands have gotten this arc tells me that one of them should be the main focus of the arc.