You have settings for autoOpen, keepFileExt, suffix.
Can you make settings for these features (enabled by default): Move to... and Copy to...?
This way, users can uncheck it to save space, especially considering it doesn't work on Windows.
Here's a suggestion. Delete any option to not show up in explorer menu.
"duplicate.menus.context.explorer": [
"Move to...",
"Copy to...",
"Duplicate",
],