I don't know quite how to phrase this so bear with me.
In the 2020 NFL draft assume the Bengals draft either Tua or Burrows. Also assume Redskins, Lions, and Giants have no intention of picking a QB. That would leave either Tua or Burrows for us with the fifth pick.
You are overplaying team needs in comparison to player and positional value. If Joe Burrow somehow started to slip, then the Redskins, Lions and Giants suddenly need a quarterback.