Job boards and LinkedIn Easy Apply capture a narrow slice of the market: people who are actively searching, know exactly what to search for, and are willing to compete against hundreds of other applicants for visibility. That leaves out a much larger group. People who are open to the right opportunity but aren't scrolling job boards. People whose resumes don't use the exact keywords that an applicant tracking system is scanning for, even though their actual experience fits. People with non-traditional backgrounds who never held the "right" title but have done the work.