Since this statement was purportedly made on the David Letterman show, it well could have been made in jest. But even if Donald Trump actually made this statement and was serious about it, it doesn't automatically follow that it makes sense for the prospective distributor to become an MLM participant.
Among the "silly" claims are that various well-known companies, such as Coca-Cola, General Electric, and Xerox participate in, not necessarily MLM, but direct selling. Apparently Alf Nucifora, the author, didn't want to risk the challenge by claiming that selling to Amway is tantamount to partnering with Amway.
Take a look at the Joint Ventures [Wayback archive] page for further information on this MLM Nonsense.
As to Nucifora's suggestion of increasing sophistication mentioned in the subtitle, there's no mention of anything relating to this anywhere in the article.
Here's some more silliness:
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