How is criticizing the premise of something a "generic tangent"? If the premise behind something is bad the whole thing is bad.
Evaluating something obviously needs to account for the context it exists in. In fact talking about this particular Show HN is impossible without implicitly or explicitly taking a position on the hiring process. If the current hiring practices were good, having resources to succeed in them would be beneficial and praise worthy. Otherwise they only help to strengthen a broken process, although obviously it might be beneficial to individuals to game that process (which further demonstrates the problems with that process).
I don't see how you even could substantively talk about this post without evaluating the hiring practices it presupposes.