A few years ago, I made a StackOverflow post about having problems with Java using the Eclipse IDE. It was a relatively basic question, but I made sure to do my research before and tried everything I could before asking the question.
There were multiple people in that thread who marked my post as duplicate, calling for it to be locked. Somehow it didn't thankfully, and other people managed to post some solutions to help me out.
This thread now has over 350,000 views, so clearly other people have been Googling the error and landing on my question for years. Imagine if I was one of them and landed on this page myself, only to find it closed with no solutions posted to my problem.
As mentioned already, it would be nice to see a change in the way SO deals with newcomers and dial down the aggressive forum moderation a bit.