I don't think that is contradictory at all to what I wrote. I agree, many recruiters will try to send you out to every client and every job they have just to maximize their chances of a fee. Those recruiters should be avoided.

If you've gone on 30 interviews and never landed one job, that might be something you need to also consider and look inward. Going 0-for-30 is pretty unusual, unless you were accepting interviews for jobs you were clearly unqualified for.