In fairness to the GP, the OP has now admitted that they made the post without having watched the video and that they did so out of prejudice against YouTube videos. GP wasn’t objecting to the additional resource but the implication via “Without video:” that the video itself is less valuable.
As the OP, I agree with everything you said, but I suggest an alternate characterization: Some subset of people, including me, prefer written communication to video (regardless of whether the video is on YouTube or elsewhere). Since my favorite HN threads delve into a topic, rather than into the details of a particular presentation of a topic, and since on seeing this topic raised I hopped over to Wikipedia to refresh my memory on this topic, I thought I would provide a breadcrumb for others of similar mindset to help jumpstart the topical discussion. Which, clearly, I was not quite successful in doing -- so, lesson learned.
The link you posted is different content from the video. You link has, in your language, "negative expected value". Someone who trusted you would be deeply frustrated and misled by trying to read that Wikipedia page instead of the watching the video. Some humility and introspection would serve you well.
