Well, the author says all he has to do is type 2 letters to send invites and rejection, maybe with a few words to make it look personal. The process is streamlined, that doesn't make it more interesting.
As an ex-recruiter, here's what my dream job would have been like:
1. No arbitrary process numbers. Job and cost numbers fine, but "10 calls a day" "5 BD calls a day" "20 resume sends a week" is stupid - would rather have a manager helping me make strategic decisions, using my time intelligently.
2. Automated bullshit. No more downloading resumes to upload to our system. We either pay linkedin and use that exclusively, or outsource somebody to fill out our own CRM (actually good CRM that has functional searching, not that Bullhorn bullshit that barely worked).
That's all it would take. If a recruiter annoys you, it's probably because you're Candidate Call #9 of the day and she has to get to 10 or she'll lose her job.