Not the parent, but I imagine what they are talking about is the Herbalife depends more on recruiting new members than they are from selling product. I would link but just googling "bill ackman herbalife" will lead you down infinite rabbit holes.
http://brontecapital.blogspot.com/2015/06/herbalife-very-lon...
[I don't have any position in Herbalife and I enjoy my shakes Harbalife free]
How much of Herbalife’s success is from selling a competitive product will determine its survival in the long run.
Still its MLM sales methods are questionable and cost a lot of people money.