We have a similar thing here but it's only for "deleted" topics and posts, which may have benefit for future reference for moderators and administrators (e.g. assessing member violations of Terms Of Service, and the counter to that, assessing complaints made by members about moderator interpretations of the TOS).
Locked topics, by the very nature of their being locked, will drop away in time.
“I hope, Anuruddha, that you are all living in concord, with mutual appreciation, without disputing, blending like milk and water, viewing each other with kindly eyes.” (MN 31)
What is the final conviction that comes when radical attention is razor-edge sharp? That the object of the mind is mind-made (manomaya). (Ven. Ñāṇananda)
"If you have always believed that everyone should play by the same rules and be judged by the same standards, that would have gotten you labeled a radical 50 years ago, a liberal 25 years ago and a racist today." (Thomas Sowell)