I personally never liked the phrase "retarded" so please refrain from use of it in a derogatory manner again on here.
As for helping users, I know the thread in question and the linked topic did provide the information for the new user. I didn't see any bashing going on other then what you're doing now. We have a large section of links within the screenshot section that are stickied for people to read as guidelines before they post.
Remember not all members play all games and if you want an opinion from the general users it's always good to provide what you think may be wrong with the screenshot, thus removing all doubt about the reason the screenshot was posted in the first place.
From personal experience in 2007 I just started being an SGA, I was sure I'd found a hack. A staff member corrected me and said no it was a GFX error, I ranted and raved a while then realised I hadn't even looked at the stickies myself. After that I had l'd learned my lesson and moved on.
I always fnd you can react two ways in a situation, learn from it and become better or argue and learn nothing.