It seems all reverted back by this changeset(https://www.openstreetmap.org/changeset/137495122).
Keep in mind that the OpenStreetMap is a collaborative project, not accepting fictitious stuff.

If there are any other problems not solved, mail us contain these terms:  Ticket#2023061810000108 — Fictiotious conutries and vandalism )

Dennis Raylin Chen
Data Working Group
data@osmfoundation.org