Forbes didn’t ruin its brand overnight. It turned it into a vending machine.
The old Forbes brand stood for editorial judgment. Scarcity. A bit of status.
Now too much of it feels like rented credibility.
That is what happens when a media company starts blurring the line between journalism, contributor content, paid memberships, sponsored storytelling, and executive vanity publishing until the average reader has no idea what they’re looking at anymore.
And yes, some of this is hiding in plain sight.
Forbes Councils literally tells applicants that if approved, they can “select and purchase a membership package.” Forbes still has real journalists and real reporting, but once the market learns that proximity to the masthead can be bought, the whole thing starts to smell a bit synthetic. 
Nieman Lab was far less polite. It described Forbes.com as a platform for “scams, grift, and bad journalism.” Brutal, but not exactly coming out of nowhere. 
Then Google’s crackdown on site reputation abuse dragged Forbes back into the conversation when Forbes paused some freelance work tied to Forbes Vetted. That is quite a sentence for a brand that built its reputation on authority. Nothing says premium editorial institution like getting caught in the parasite SEO era. 
And if that wasn’t enough, the Wall Street Journal reported that some advertisers who thought they were buying ads on Forbes.com had placements running on an alternate, ad-heavy Forbes property instead. Apparently even the inventory needed its own shell game. 
This is the actual brand damage.
Not that Forbes has sponsored content.
Not that it has contributors.
Not that it monetises the audience.
Every media company does that.
The problem is that Forbes has spent years teaching the market that its credibility is available in multiple packages.
Once people start hearing “featured in Forbes” and reacting with a shrug, the game is up.
Prestige brands do not die when they make money.
They die when nobody can tell what is earned and what is bought.
Forbes used to be a signal.
Now it is increasingly just a very expensive distribution channel wearing an old tuxedo.