A well authored CI review process is significantly better than any human could do. We have the AI review not only the changes but clone and investigate all related repositories that integrate with the code to evaluate interactions, check all open and historical issues that may be related, review production/development logs for the feature, etc.
It will then also go update issues/tasks to reflect the changes after the merge.
Similarly you can have automated agents watching post-deployment to mitigate risk in the "a new feature just went out" time-frame. Just having someone check the related logs in the hours after deployment can catch a lot of issues that otherwise would turn into a fire-drill.