A few years ago I had a software problem, and in the course of trying to solve it I found someone with almost the identical problem on SO, although no-one had posted a solution. Later on, I managed to piece some facts together and come up with a solution that worked for me. Trying to make life easier for others having the same problem, I posted my solution to that SO question, along with a brief explanation of what I thought the underlying problem was, and how my solution addressed it.

I got several upvotes, and one or two comments from people saying it worked for them too, which was nice. There was also a post from someone it didn’t work for, and they outlined why they thought that might be, which was constructive.

Unfortunately there was also some salty grump who weighed in just to tell me that my solution wasn’t “correct”. Not that it didn’t work mind you, just that it wasn’t good enough for them. As far as I bothered to look into their vague comments, my solution may have fixed the issue more as a side-effect than directly, but it did fix the issue. Meanwhile this person offered no alternative instructions of their own.

As time goes on, I seem to run across this sort of – not just unhelpful but “anti-helpful” – attitude more and more often on SO.