You were just the last rude commenter I saw before commenting myself. He is asking for help, and instead of continuing to help or moving on, people are rude or are attacking him. I feel that isn't ok.
We can agree to disagree about who's out of line.
It is very useful, just only in very few circumstances. 99% of what people are shoving it into, it has no place being there, but there are some things that it legitimately just does better.