95% of the author's [limited sample] where recruiters earning a large amount of money for doing very little technically.
These guys are cold calling, searching LinkedIn, crawling phone trees, and sending requests all day. When they can they're touching up resumes and doing screening/placement interviews.
Moreover, their technical is different than your technical. It's social hacking and networking. It's learning how to find better opportunities and better people faster.
You might not like that they're Ronin, and work socially. However, they're pulling 12-15 hour days to make their sale.
To a lesser extent, I also care if any of the manure that they shovel will stick to my heel.
In theory, you should be able to come out ahead by delegating job search to someone who is better at recruiting than anything else, when you are better at software than job-searching, even if you are still better in absolute terms at recruiting than the recruiter. In practice... well, let's just say that specialization only works if the single best thing you can do offers positive value to the market. If your top skill is wasting other people's time, no one is going to hire you for that.