I was recently job searching and roughly 50% of all jobs ghosted me. Just an automated email and then... silence. And when applying via LinkedIn only ~5% of companies even opened my application.

I can believe that your company has a good reason for keeping the job up, but I also know that some job ads are black holes were no one bothers to do the bare minimum including taking the posting down. I have no idea how to differentiate one from the other.