Can someone please explain why this comment is getting downvoted? It is essentially saying the same thing as the current top 2 comments that exercise is not a t

Can someone please explain why this comment is getting downvoted? It is essentially saying the same thing as the current top 2 comments that exercise is not a terribly meaningful contributor to weight loss, and adds to the discussion that certain conclusions in the article may not be warranted given that context, using no inflammatory language. Yet it is almost invisible. What gives HN?