If anything, hiring inept people will make the qualified folks want to stick around less. This has the opportunity to be bad-upon-bad! Yay!
Yeah, I can't see why someone _would_ do it if they _could_ but aren't being paid well. The problem is motivating people with the skills to want to work... and it's hard to do that at borderline poverty entry-level wages.
Edit: I should add they still do need to pass a background check.