The form of this advertisement annoys me, it starts out sounding like an actual article and when you reach down a bit, the sentiment behind the argument becomes

The form of this advertisement annoys me, it starts out sounding like an actual article and when you reach down a bit, the sentiment behind the argument becomes glaringly obvious "you probably don't need A because you can get B from us instead". That said, I also disagree, both with the "you don't need" part and the "knowledge garden" idea in general.. A website, with some articles, is super useful because you're writing it for "someone who does not know what you do" and that person.. is future you = best notes ever.