It's been 4 years (at least).
Not since Chase Young, Jeff Okudah, Pete Werner, and a number of other stars took the field in 2019 have fans been able to feel remotely comfortable with the product put on the field by Ohio State's defense. Surely, if forced to testify under oath, Ryan Day would say the same thing.
Despite reaching the national championship game in 2020 and coming a field goal away from doing the same a season ago, no supporter of the scarlet and gray would claim that the defense could be relied upon in the biggest moments.