Reddit has a lower barrier to entry, which will invite lower quality comments. Sadly product officers are starting to flow into HN and other people with no programming experience, so the quality of comments are as such. If there was a fizzbuzz challenge to sign up, i'd bet the comments would not consist of such nonsense.
This is extremely elitist and reductionist. Plenty of the best comments/discussions on HN come from non-programmers. Personally, I like that people from various backgrounds come together like this as it tends to provoke more interesting discussion and makes HN less of an echo chamber than Reddit.
