Here’s my thought based on what you said: basically, Meselj approve certain people to be “official” entry checkers. That’s the important part; so you don’t have just anyone flagging an entry they dislike. The admins still have the final word to approve/DQ/ask for changes, of course.
Using my own post as an example (since it’s already been brought up on the matter)
Now, since I’m nobody important, Eljso aren’t obligated to read my posts before making any decision. But if I were an “official” entry checker, then this post would carry the weight of “Jaynak should read this before approving the entry”. They can still approve/DQ/ask for changes as they see fit, but there’s less chance of missing a detail like this.