That's one point of view. But it's more than that.
It's for people trying to understand what they did wrong and where. Learn something that they may have overlooked. Some people come here to express their ideas, some people come here to express their feelings or experience in the game. Trying to comprehend what they have experienced.
It's like what's the point of a book or a forum in general. Simply to discuss a topic, experiences and express their thoughts. But this topic, this section is a sensitive topic. Most people come here expecting the worst or learn from it. But it doesn't always have to be that way. To me, it's a place to share knowledge, ideas, and opinion. Just like any other section.