I agree with everything here. I have actual experience taking children on cruises (disclaimer: not Oceania) and I take offense at the notion that all children on cruises are uncontrolled, unsupervised brats running amok. We have take our grandchildren to many wonderful (and educational) destinations, starting with little ones in diapers to the currently teenaged adult versions. I never, not once, got a complaint about their behavior because we make it clear to cruise meant behaving, and they love to cruise. (My eldest gchild is one cruise short of Elite on Princess. 🙂)
Some of them liked kids club, and some did not. We never "parked" them there. They spent most of their time with us onboard, playing board games, ping pong, etc. One of them absolutely loves shuffleboard and we have to drag him in if it starts raining. We have had so many wonderful experiences with them, and I hope they will all be world travellers.
I suspect that most children on cruises are more like mine. The ones who act up and cause trouble get the attention, but those are the minority. Please don't lump my civilized grandchildren is with the brats you have "heard about." If children are so disruptive and bothersome, choose adult-only cruises from now on.