I don't think we know enough to make conclusions about bias. I do know that the giving of the award based on reputation is something they've long since sought to curtail and have factored the available data in to the process. Rather than merely survey managers, as in the past, a complicated evaluation including managers, coaches, and data rankings provided by SABR (accounting for 25% of the tabulation) is taken into account. I can't speak for what that SABR data includes, but The Fielding Bible ranks Luis Severino among the top defensive run savers in the National League at his position, while Lindor is much lower down among his peers (who are led by Masyn Winn, I think).