For information, we’re still seeing waves of undiscussed mechanical edit (removing name:ru from all sorts of objects in Ukraine). The previously mentioned OSM history link shows the problem - in this case 3 deleted accounts have removed @Barroszt’s obsolete name:ru and (along with many other edits) were reverted by DWG accounts including mine**.
The rate limiting that @Mateusz_Konieczny wrote about here is still working, but it is still possible for a “new” user to sign up mechanically, make a very large number problem edits and then, because this issue remains unaddressed, delete their account.
** We (the DWG) will need to go through @Barroszt’s edits to try and unpick the mess to make sure that edits like this one are reapplied.
Following https://www.openstreetmap.org/user_blocks/15187 that user has been in contact with the DWG about removing their block - I’ve emailed them to clarify the sorts of edits they’ll want to make if we do so.
Edit: I’ve raised https://github.com/openstreetmap/openstreetmap-website/issues/4307 as an issue, since I couldn’t see exactly the same issue elsewhere. It will need discussion since there are a number of existing conflicting requests here.