Everyone is a genius with the power of hindsight.
Should the Lions have hired someone else besides Bob Quinn and Matt Patricia? Probably, but it was a reasonable choice at the time, despite the disastrous results we are currently seeing. The same logic can be applied to Eric Ebron over Aaron Donald or Peyton Manning over Ryan Leaf: making decisions is difficult, and whether you are right or wrong might not come to light until many years down the road.
That being said, do not use hindsight to argue that the Detroit Lions should have drafted a quarterback in the 2020 NFL Draft.