Getting 30 job offers a month probably would be as great as the author thinks. But how many of those 30 recruiter emails will lead to job offers? Probably zero.
My beef with recruiters is that they repeatedly pitch me jobs that I know their client won't ever hire me for. They're not only wasting my time, they're wasting their client's time, too.
And getting a recruiter replying to your job application is a somewhat different than getting a recruiter email without job application because there is zero effort prior to receiving the email.
Yea I posted my resume to a few job databases about 7 months ago and still get calls and e-mails on a daily basis. I'll always reply to something that seems like a personalized e-mail but when someone is contacting me asking for an updated resume or their e-mail doesn't include my name I can tell they don't really care. I feel like if a recruiting firm went for quality over quantity they'd end up with much better results.