Why isn't /prog/ getting cleaned up?

I accidentally was on /prog/ but, due to the subject matter of the threads, was convinced I was on /lounge/. What tipped me off was that people were editing their posts to correct minor grammar errors wtf. Less than 10% of available threads were related to programming, however. Why isn't /prog/ getting cleaned up?

>>11
Thing is, 4chan has a rule that allows mods to ban anyone for "low quality" posts, so really it depends on the mod's mood.