There is a new tool in the making that might be an alternative or fallback for OSMCha. There is not a lot public yet except osm.wiki/OSM_Monitoring_Tool. But I heard that more info will be posted soon.

This is exciting!

And I agree that maybe the OSM Foundation should look into supporting some tools for coordinating and monitoring OSM edits (Tasking Manager, OsmCha, Osmose…). Such tools help us maintain the quality of OpenStreetMap data.