For info, I’ve edited the pages of the following wiki accounts to also link here:
https://wiki.openstreetmap.org/wiki/User:Beautifulplaces
https://wiki.openstreetmap.org/wiki/User:Wikithemap
https://wiki.openstreetmap.org/wiki/User:Johann_Haag
https://wiki.openstreetmap.org/wiki/User:OpenStreetMap_historian
At first glance, these all appear to be sockpuppets associated with this user. There may be more.
Edit: Yes, at least one more:
https://wiki.openstreetmap.org/wiki/Special:Contributions/AIBot2304
That appears to be designed to resemble the existing account https://wiki.openstreetmap.org/wiki/User:AIBot2034 , an account created (I presume) by someone in Austria trying to keep track of Beautifulplaces sockpuppets.
Also possibly:
https://wiki.openstreetmap.org/wiki/User:HellasX
https://wiki.openstreetmap.org/wiki/User:Adresshistoryorg