Nowhere does it say that the plugin automatically adds all skins from the workshop. The plugin automatically adds all skins accepted by developers - there are about 4200 of them.
The APIs in the configuration are of 2.
1. For images ( not for importing skins )
2. For adding skins/collections by command.
Also, I will note that the skins are from the workshop, they are not cached and the game client has to download the skin. Personally, I already have 5000 skins that take up 20GB.
If there are a lot of skins from the workshop, the client will take a long time to download them.
So I recommend everyone to add no more than 100-200 skins from the workshop.
But if you want to import all skins, I can add that possibility.