Unranked players in gold rankeds? WTF is wrong this this matchmaking? Fix your s**t riot

Why is it possible for unranked to play duo with low gold in a full gold mmr game? It was his FIRST ranked game ever, played only normals with silver III and below and other unranks, while his duo partner was gold IV. What philosophy stands behind making it possible for unranks to play in gold mmr games? Is gold really considered as beginners friendly elo? Its just so unfair for everyone else. While having normal draft games and FLEX QUE as an option, WHY are they allowed to play SOLO DUO ranked games with much better players, ruining game for everyone including themselves? fix your game