These recruiters do exist. They are difficult to find, they are rare, and there seems to be fewer of them but they do exist.

I wouldn't say you don't have to lift a finger and they do all the work for you, but some of them do seem to have backdoor entry to the companies and their applicants will be preferred. Not to mention that some companies only hire this way (through vendors, not sifting through thousands of applications on the LinkedIn or Indeed).