You mean you shouldn’t hire the high-school grad who took the two-week Java course at the cram school above the dosa joint? Who knew?
Seriously, the consulting companies will slip you plenty of duds if you let them. They’re all like that. You name the price, they’ll find someone who will accept it. Never believe what is on the resume, verify references, and watch out for identity fraud.
It doesn’t bother me. I’ve made a huge amount of money consulting for companies who discover after 3 years+ on a project in India that they haven’t even got something they can demo. I give them a number, and if they balk I tell them to go back to India and see how it works out; I’ve got no shortage of work.