Literally the last word of the sentence before the sentence you quoted stated the very specific company name.
In the US you can run a pyramid scheme as long as you have enough money and political influence to do it “legally”.
For example, pay me $20 to join my company and you get the right to recruit people for $20!
Amway is essentially exactly the same except they add a product to the mix to get around the law. They still primarily profit from the "employees" rather than customers.
Changing the definition of a pyramid scheme, for the proposes of law enforcement, to something more akin to "profits primarily off employees" is what needs to be done.
There are 0.0% of pyramid schemes with no product.
You pay some amount of money that gets you basically nothing (maybe a few pages of "how to recruit") and that's it.
MLM schemes are distinct in that they actually have a product and that's what makes them legal.