Yes, but I think this is the central question for Dallas in 2026. The “light box” approach can work, but only if the Cowboys' front can consistently win with fewer bodies committed to the run. Christian Parker has explicitly changed Dallas's base defensive look, and the new scheme is being built around the personnel rather than forcing players into the old system.
The big key is if Williams and Clark are occupying blockers and keeping the linebackers clean, Dallas can afford to play lighter. And they should be able too. It's nice to have run stopping DT's finally.
The biggest reason for my optimism isn't that the Cowboys suddenly have a dominant run defense. It's that they've rebuilt the personnel specifically to make this type of defense more viable. Especially since the offense should be able to allow them to play with a lead and force our opponents into playing catch up.