That doesn’t apply in preseason, from my experience you can flip that angle around. In the preseason the new coaching staff and players seems to take these games more serious then a a veteran Team.
In preseason u can dismiss the starting squad from your handicapping, they arent getting any significant snaps, and if they are successful snaps they’ll let off the gas on the next series not to reveal the playbook.
focus on back ups , team depth, position battles and chemistry with qb2-3 with the back up WRs.