I know some recruiters and what you say is true: it's not necessarily the recruiter but the client that is clueless. I did some hiring for some companies and saw some of this at work (e.g. the CFO writing the job offer, never passing it by us and then sending around something like this).
Considering the volume that recruiters have to handle, they also cannot check everything for validity, so they are probably the wrong persons to rant about.
Considering the volume that recruiters have to handle, they also cannot check everything for validity, so they are probably the wrong persons to rant about.