Nope not the injury part, just the Bengals defense giving up the most big plays per game in the league part. I think your bolded part above addresses it better than your “interesting take” reply from earlier to the poster whose main point seemed to be that the Bengals D is bad.
My brief research shows Bengals’ red zone defense is top 15, which probably helps balance out being the worst at giving up big plays.
FWIW, the Bills are toward the bottom of the league in giving up big plays but unlike Bengals most of those are runs. I’d have guessed the Bills have a worse red zone defense but ours is top 10.