I don’t know, but it looks like you are right.
Other games I mod use Mod Organizer and “creation kits” are on Steam, but these are not UE games (Skyrim, Fallout etc).
As for Linux it made a huge progress + there is Proton from Valve + there is Lutris… you can run nearly all the Windows games and programs without knowing any arcane knowledge about runes that have to be put in magic admin terminal to make things work.