Why does Userscripts use symlinks to my home directory folders?

[conradray]

Why are there symlinks to my home directory folders in these Userscripts directories?

ls -al ~/Library/Containers/com.userscripts.macos.Userscripts-Extension/Data/
ls -al ~/Library/Containers/com.userscripts.macos/Data

[ACTCD]

App Sandbox

Enable managed file access

The first time the user launches your sandboxed app, the system creates its container — a folder in ~/Library/Containers that your app has exclusive read-write access to.

To minimize the risk to user data, the system restricts your app’s file system access to just its container, but that container does include a number of symbolic links that resolve to common user folders, such as ~/Downloads and ~/Pictures. However, the system considers those sensitive folders and requires that your app include certain entitlements before it grants access to the resolved locations of the symbolic links. An unauthorized attempt to access one of those folders results in an “Operation not permitted” error.