I can't speak to the topics addressed in the article itself, but the thing I find most annoying is that _most_ of the people who publish these books (and guides

I can't speak to the topics addressed in the article itself, but the thing I find most annoying is that _most_ of the people who publish these books (and guides on YouTube, blogs, for-pay video series, etc.) seem to have made their fortunes through the works that are intended to teach people how to build up their own wealth/lifestyle/happiness. Slightly related are people who serially interview successful people and try to weasel out words of advice or quotables, but never reveal things of greater depth that has more impact on the viewers/listeners/readers (few interviewers do, IMO).