"Remained exceedingly vague" isn't exactly fair. How much do you expect from a comment on a discussion board? If you want more specifics, ask for them! You're in attack mode here right out the gate.
He has admitted to "mak[ing] trouble" rather than believing everything he writes.[0] He acknowledges that his books are not "ends in themselves."[1] He cherry-picks supporting studies and leaves out their failure to replicate.[2] He throws around scientific terms but uses them incorrectly. [3] He offers ill-considered off-the-cuff "solutions."[3]
One reason HN comments might be "exceedingly vague" is because the specific criticisms have been laid out extensively over the past decade.