Resurrection of old posts

I just replied to a person who resurrected a really old message with a new "me too" reply.  I'm not a fan of that.  OS updates and other factors may make parts of the old thread no longer valid, though it didn't in this particular case, so I did reply.

Any way you can bulk lock all messages older than a specific age (like maybe a year with no activity)?  I don't mean always do that (though you may want to), just do it for the many years' worth of posts now once again unlocked.

It would be good to get some discussion on this here before implementing.  Someone may have a good reason to disagree.