I've seen a few of his videos over the years and remembered them similarly to your description, but watching that video you linked to I think he does do a proper critique. Goes into what makes the writing weak, plot drag, links books to other books, and even has a deep understanding of an authors' body of works to be able to compare and provide insight.

And in the beginning of the video he gives quite a lot of praise to BookTok, so I reckon the title is more tongue-in-cheek hyperbole, with a dash of clickbait!