I looked through the filing cited in this comment and every instance of the word "background" just says that backgrounds for a given employee are either complete or in progress, plus the quote. Nothing indicates anyone failed any background check (to the contrary just by count it seems like about half of them have been completed), and certainly nothing indicates that "most of them could never pass" one. Which again just by virtue of about half of them having been completed already seems to be false on its face.

It's not unusual to give an otherwise-qualified person limited access to certain data while their background checks are completed.