alt Hacker NewsThe poster you responded to didn't claim that drugs were universally helpful. I think the main point is that there is no universal that works for everyone. For some exercise works, for some drugs, for others therapy. And "works" isn't a yes/no, one might work a little for you, one might work super great.
The poster questioned the universality of exercise. And the went on to say that drugs worked for them in the next sentence. Clearly the two statements are related.