Nutchanon,

Thanks for continuing the work on this user.
I think strongly that we not need involve the DWG on this particular problem as it involves the reversion of a lot of changesets. I think we have the skills locally with Stephan or Johnny to simply do a mass edit, deleting any node by him that does not contain a name=* tag.
So, by all means, wait three days … then lets do it.
Peter (Beddhist) - is this something you can do too as it seems like you have an interest in data emanating from Maps.me.
Russ.

NB : I would add that the effects of Maps.me was raised several years ago, prompting comment then at https://forum.openstreetmap.org/viewtopic.php?id=56474