Equal and Opposite Reaction
It isn’t as easy as 1-2-3-4. Or, it’s as easy as isn’t 1-2-3-4. It’s hard to express things in negative terms! The point is: If all of those anti-quad clues were normal quadruples clues, well, this puzzle would be broken. But also, it would be incredibly easy. However, they’re not quads, they’re anti-quads, so they provide slightly less information, keeping this puzzle fun.