Q. How did Bot Watchers discover the truth?
A. Because they were looking for it.
Although it hasn't seemed possible to most ill-informed jounalists, the whole of 'FLP' has comprised a vast labyrinth of corporate structures of varying sizes. Their purpose has been to prevent/divert investigation and hide key information from the public, journalists, regulators, etc.
In 'MLM' rackets, key-information, like the money, has only flowed in one direction.
Once you know the above, all the extraordinary facts that Bot Watchers are rapidly uncovering here, were almost 100% predictable.
For decades, each 'MLM' recruit has immediately been taught to maintain his/her own little monopoly of information. On pain of excommunication, a Bot must never say anything 'negative' about his/her activitiy i.e. Bots must never disclose the truth that they have never made a net profit, or that they have never examined any quantifiable evidence proving that any other Bot has made a net-profit.
In the classic '100% positive' game of 'MLM' make-believe, 'negative' information (ie the truth) simply does not exist.