Hello julcnx, I'm from Iraq too, and unfortunately, Iraq and the Middle East in general, maybe other locations around the world too, people add stuff to the map that should be private, like "I parked here", "My friend Ziko" or "My sweet home", etc.. these should've been in their bookmarks not to be uploaded to OSM, few years ago Iraq was filled with thousands and thousands of such nodes that were added by Maps me users, thankfully we established a great community and started to remove the spam and made the map the best map of Iraq online.     
This changeset indeed removed spam, a lot of, but unfortunately, which I believe by mistake it also reverted changeset 139129407, that changeset was spamming the world history tab so it was above Iraq too, and it has 'tourism=camp_site' tag, this tag is one of the most tags used by maps me spam changesets alongside with castle, monument, attraction, viewpoint, place_of_worship, guest_house and many many more, We usually search for spam in overpass turbo from time to time these days and delete them, this will leave the spam undeleted for time in the history tab, therefore people go to the history tab and delete, this is exactly what I believe also happened in the changeset 138107559 that you mentioned also.
About the changeset 139129407 that was deleted by accident I believe, I undeleted the nodes in changeset 139232553.
If you have any other questions about Iraq, you can reach the Iraqi OSM community at https://t.me/OSM_Iraq      
Best Regards.    