It's part of the (on average) Hacker News identity to hate Experts-Exchange and any resource that exposes itself in search results but requires sign-up to access.
Anyone who tries to discuss something that is opposed to the HN identity is quickly downvoted, they learn from the feedback and damaged karma not to bother and you are left with only comments/commenters that say things they know will get positive feedback/karma.
edit: I'm actually surprised that I got downvoted just for mentioning this, it only serves to reinforce the reality of this ideological position.