Scrolling through there are so many posts with repeated replies, and some other posts which are giving wrong information (which was accurate atvthe time it was posted)
And mostly more recent posts with litle replies go to the bottom of our feed.
Should there be an expiry date for posts, after which the are locked or archived?
If post giving wrong information, there is report button on bottom of post, just use it. Why need expiry date for locked or archived thread ? By default no one can reply on locked thread , so no question for bump. I mean locked thread slowly will go last page.
If you are thinking expiry date for all over thread than strongly disagree. If expiry date on all over thread than we will miss many useful post. I don't think all of your suggestion is useful.