Naah, when Q says bottom to top I think he means that they're getting the top guys by taking out their minions from the bottom upwards i.e. catching the guys grabbing the kids, catching the guys storing the kids, catching the transporters, catching the sellers, catching the buyers, etc.
Bless. It's never easy. Maybe try not to get too technical about it. It throws everyone off. Delivering facts, gently, as theories and discussing it simply helps. Science is a distraction.
Anything to do with this https://archive.fo/qERv5 ?