by OldGuy » 23 Sep 2018, 19:36
Your suggestion may seem perfectly logical at first, but think about it.
The topics are posted by visiting members and other members add content in their own posts. Some of those topics remain of interest for a very long time. In fact if you look closely, there are still active topics displayed on the site that were originated in 2013, yet they are still perfectly valid for today's topic of conversation. There is no specific expiration date on any topic. Life happens. You have to read it to see if it is current.
Some topics are about a specific event that happened at that time. For example, I recently posted a topic about the site passing 500,000 posts and you commented on it while it is a relatively recent "fresh" topic.
If someone finds that post in 2021 and brings it up again at that time, any content added that far away from the event would be useless other than a comparison of look how far we have gone since then. The topic generally expired on its own but future content may be applicable if properly written. The administration has no need to go looking for such content to lock it, and they could be wrong if something new could reasonably be added years later. Anyone who took the time to actually read the content can see for themselves that it is out of date, or if what they might want to add still applies.
With well beyond 20,000 topics posted at this time, it would be quite a task for the administration to look at every one of them to decide if it should be locked. It is much more logical to expect those who want to add content to actually read the original post themselves to see if added content is justified.
It is right back to taking your own responsibility to reading what you are answering before adding content. I believe the same general "rule" would apply to any site and topics posted there.