I would put it on Campbell if Goff is too injured to throw. When they are throwing, it's just screens. Remarkably they would still be winning this game without a missed extra point.
It was a screen. That's the only receiver available on a screen call. He should have fired it into the ground. Lets not get carried away. Matthew Stafford made a much more egregious mistake last week.
Benching Goff would just be punishment. I don't know the team would respond any differently to a worse QB. Maybe you rig a COVID test so he's ineligible to play.