Maybe Rush would implode, but I'm not sure how that's relevant here? We bash the defense but after the Eagles game through the end of the season they only gave up 20ppg. They had some serious let downs like the Jacksonville game, but they were very good overall. Even this past season we talk about how bad the defense was, but they were 5th in the league at 18.5ppg gave up 20 or fewer points 11 times last season.
This is really why I don't fear moving on from an offensive skill player. The NFL is still a defense based league. If you have a really strong defense you're going to win a lot of game. Outside of the Seattle game where Dak really bailed us out this team won when the defense held a team under 20 points and lost when they didnt. I would assume pretty similar results in 2022 as well.