I don’t think anybody’s expecting them to fully throw away the girls, the hypothetical is that the focus will shift.
Now that the bulk of the island story and their individual background eps are over, with the post-shark, rescue, and whatever resulted in Shelby as she is now parts not enough to be a full show, especially one that satisfies the premise (stuck on a deserted island), they may shift over to the boys and perhaps contrast how they handle specific obstacles to how the girls did, while also focusing on continuing the girls’ story, both wrapping up what happened on the island and what happens now in the bunker.
Or, they may simply…oof, they may escape the bunker and realize they now have to get off a different remote island. I would prefer that, screw the boys, lol.