There’s absolutely nothing wrong with professional athletes doing their job. What’s unsportsmanlike is the other side crying like babies about getting routed instead of doing what they’re paid to do and stopping the other side from scoring.
The NFL is not Pee Wee. These were not children. There’s no slaughter rule. Was Dallas supposed to stop trying as well? When the Vikings were running the ball, the Cowboys were run blitzing eleven guuys to stuff it. Should the Vikings have been content to keep running up the middle and risking injury to keep from hurting the Cowboys widdle feewings?
It’s not like the defense wasn’t allowed to play defense, why should the offense not be allowed to play offense?