They give a quantitative answer ("here's how much...") to a quantitative question that many people are undoubtedly googling.

They do not say you ought to become a millionaire; only that this is what it hypothetically takes. Unrealistic for some? Sure, but not incorrect.

They even note:

"Depending on your circumstances, making such aggressive contributions may feel like a squeeze."

and

"Starting with something is more impactful and puts you in a better position than if you were to not invest at all."

They then recommend—yes, for commission—tools that may be useful. But those tools do exactly what they say; that's the opposite of a scam. "Scam" is quite an allegation to throw around so lightly.

In your words, "It’s basically a series of advertisements and revenue opportunities for the publisher cloaked in personal financial content and guidance."

So, kind of like a paid newsletter pitch and Medium affiliate link? Nothing wrong with that—seriously, it's a good idea!—but it's not like this article is without revenue opportunities, either.