Ugh, I hate how much sense that makes...but he’s talked himself into a tight spot by going on so much about how Kaido at least is going down by the end of the arc. Linlin’s the only one that could feasibly survive, and after WCI, I really hope that’s not the case.
Still, I agree that the former Rocks crew mates probably haven’t fully served their purpose yet. Wonder how this son will be involved in this conflict OR the future.