So now this risk is mitigated. However, I believe that the 6 months is a very short life span for a post to be eligible to be reported. Maybe allowing reports from 2-3 years back would be more useful. For a long time now mods are not overwhelmed by the number of reports, therefore limiting the reports to only 6 months seems too short...
Yeah this means that if the post is reported is six months old, the mods will not check it if it falls under the following reporting criteria
We generally do not moderate posts this old for on-topicness, substantiveness, multi-posting, and other "cleanliness" issues.
However, it can still be acted upon if it is reported for plagiarism.