Maybe you should ask how many people look the other way and how many people are secretly transfused.
The children dying is a PR campaign started by the watchtower now used by critics. If you knew what HLS really does you would see the hypocracy. It is a game. Those people dieing are victims of circumstance. If jws had true integrity supported by the watchtower on abstaining from blood I would believe you, but they don't.
The watchtower will provide a lawyer to sheild them and sell you out. You get your kid taken from you the kid gets blood, and you look like an idiot, and you may now have a child abuse flag on your record.The elders will enforce the decision prevent you from "making a show" or "bringing reproach on jehovah". The kid recovers the and is promoted as never having a blood transfusion because jehovah "brought them out of it". Everytime I read an article on the blood issue I wonder if the person actually recived a blood transfussion or not.
As for adults they take their blood secretly( or use treatments unapproved by the watchtower) and if the brothers find out they take their punishment (such as being deleted) or elders just burry it.