Yes, that's basically what I was getting at, but I wasn't sure how to title the thread.
I think it used to be at least 30 days of inactivity before threads were automatically closed, if not more, so I was surprised to see threads that had posts as recent as 8-10 days ago being closed to further replies. But I only visit here once in a while these days, so I don't know what the policy was before the board was updates.
I'm on an industry specific board that has no limit at all. So you can get people searching the forum and replying to posts from a decade ago. Sometimes that's OK. Sometimes that's unhelpful or misleading depending on how out of date the information in the old thread is. Perhaps more often than not, someone bumping a thread that old is up to no good, which may be one reason why the admins leave everything open since it helps to identify those people.