Magnus had the advantage. But he told Caruana he thinks he has such a large advantage in rapid chess he could offer the draw
Comment if you agree that Magnus and fabi shouldn’t have drawn
Well, remember that Carlsen doesn't have access to an engine. He is playing on his own, and could have evaluated the winning chances as roughly equal with a small edge for black.
So he leverages the small edge to offer a draw and when Caruana accepts Carlsen's losing chances decrease by going into the playoff.
He should have won....