I don't know if it is and I am not trying to undermine the article but it's really difficult to know who to trust when it comes to science relating to diet. It's such a lucrative area.
Funding corruption is a relatively minor cause of bogus research. Politics and culture are far bigger problems because hired guns aren't nearly as effective as true believers. (Which is a shame because hired guns are often the only obstacle to true believers.)
Note that there's no reason to expect that true believers will be right more often than hired guns.