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.
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)
Having understood name-and-form, which is a product of prolificity,
And which is the root of all malady within and without,
He is released from bondage to the root of all maladies,
That Such-like-one is truly known as 'the one who has understood'. (Snp 3.6)