In the Confluence Space Permissions, Smart Links are categorized alongside Pages, Databases (sandbox), and Whiteboard settings. Even if we intend to restrict access at a space level, we do not have the capability to do so.

It is imperative that we have the capability to restrict this feature at least at the space level.
It would be great if there is a way where we can decide who can use smart Link feature or which all products can be linked using Smart Link Feature