one of my favorite quotes: "Fairy tails do not show children that dragons exist, they show them that dragons can be defeated." I am paraphrasing this from memory so the exact words might differ.
Maybe we could just as well say "Steem doesn't show us that bad content/spam exist, it's shows us that bad content/spam can be defeated."
Perhaps it doesn't need defeating as much as ignoring by bringing good content up. A few require a good beating however :)