I took your point to be "hirers would rather that job seekers contact them directly than look through resumes", but then your example is one where no one contacted you and you hired without looking through many resumes anyway. That doesn't really prove your point, and makes it sound like advice for people who don't much care who they hire.

Anyway, if people start to follow the advice of reaching out directly, that channel will become exactly as clogged as the job postings.

They meant hirers contacting future employees.