Does anyone know why we keep Morgan Rielly around?

Im not trying to be a dick. But what does Rielly do? He is kind of just average at everything and doesn’t do anything significant for 7.5 mill a year. I can name 30-40 defensemen who skate, shoot, defend just as well or better. Wouldn’t you rather have 2 solid defenseman making 4 mill a year rather than what he gives us? Look at a guy like Troy Stecher for 1.5 mill, or Jake McCabe for 4 mill. Idk about you but id rather 2 Jake McCabes over 1 Morgan Rielly.