Yes, some good posts are not found, or just discovered by a few people, and then more people did not see, and the author did not get much reward, affecting their enthusiasm, it is necessary to high quality Posts listed to allow more people to see, forming a conscience cycle.
It's usually a forum system work not as wiki storing good final knowledge. If you open the forum then you must give people the right to post thing they want even it's shitty. I'm tired with the off-topic removing even I replied to the topic like just a comment.
By the way, I think merit system is good to sanitize posts. But I personally think it's not too important. The majority newbie people here need high rank level account to participate bounty programs. They can clone accounts to earn a lot quickly and much more than trying to level up their account to legendary level.