Where are you seeing expired posts? By default it should only show open listings when you click on an ad. If you’re using search, use the classifieds search in advanced to filter out expired. Expired ads shouldn’t get bumped they’re removed.The marketplace is clogged with expired postings. I support having posting expire, but I recommend not having the expired threads be bumped to the top.
I'd allow people to filter for expired postings, but let them sink down the list of postings.
I think I see you’re looking at the forum section. That is just and update to move to expired. They’ll move down over time. Its serves as a notification to the seller and buyer that it’s timed out and time for relisting or delisted at that post
Click on “Classifieds” to go to the actual listings