They're all indoctrinated to varying degrees for sure. But a lot of them are young and write for obscure or fairly obscure blogs. They're trying to make their mark and become more widely read, but often don't know a lot about football (or life for that matter). I read many articles that are just plain embarrassing, not even Journalism 101 stuff.
The agenda is promoted and instilled by those who make a lot of money as "journalists." Below this article is another one, called "What the Draft Experts Say About Pierce." It quotes the despicable Lance Zierlein on Pierce, who fully knows what he's doing: "Pierce was a mismatch as a deep-ball target at Cincinnati, but is more likely to be tabbed as a possession receiver with the ability to create some downfield trouble as a pro. He plays a physical brand of ball and has combat-catch toughness, which is important because he’s not an elusive route runner. He can work underneath or challenge a bigger, slower cornerback deep, but the route tree is going to be limited. Some players have traits that don’t show up on the field, but Pierce utilizes both his physical and athletic gifts. He has backup potential with zone-beater and red-zone value, and will likely play on special teams."
Now that's obvious malice, as Zierlein writes this garbage year after year about White players and is richly rewarded for it.