There's a fairly constant stream, or at least dribble, of spam and offensive flags being applied to questions which are merely poor. They certainly aren't selling things. They aren't generally flagrantly off-topic -- just weak. Heck, of late, they aren't even particularly subjective.
Look, we got downvotes and we got close votes. Hitting these with the spam flag isn't helping anything. Most of them come from 1-rep wonders, so the big rep hammer will be pointless. There's no special urgency. Even if there were, it's no faster than collecting close votes.
Why do I care? I want to be able to visit the flag page, and quickly see if anything there deserves further attention. If I have to wade through a long list of innoffensive items, it's a lot more time consuming.