Links broken for custom entities

It would appear that links to custom entities are trashed as they are not nodes and may not have an entry within the menu_router table. The following code snippet from the intlinks_hide_bad_links.inc file seems to make some sweeping assumptions:

// Otherwise hide the link; it will most likely not impress visitors.
// @TODO: Possibly log such links (once) and pages where they are found
// to assist with troubleshooting and site maintenance.
return $matches[2];

Would it not be better to simply return the original link instead of assuming it to be invalid?