Unranked is *not* the bucket category used to define all unskilled players. Unranked means just that, unranked. The system has a good idea of their skill level but it hasn't been properly evaluated in serious ranked matches. This means that an unranked player can potentially be *any tier*. They could be a Bronze scrub who has a normal mmr that reflects Gold tier play or a Diamond level player who plays for fun with friends of lower skill in normals and has a Silver mmr.
The point is, stop acting like unranked players are just trash players. They aren't any worse than you, they just aren't classified in a tier yet.