Those engineers are no doubt panicking, even if they aren't the cause.

While I don't have insider knowledge of this particular deployment, there was a strong industry-wide push towards "ship unreviewed AI generated code and hope for the best", partly driven by the fact that AI writes code faster than humans have bandwidth to properly review.

Under the hypothesis that some under-reviewed AI generated code made it into prod, the situation could be qualified as "engineers are panicking, because they don't know if they are the cause or not"