If I was an established artist making a good living from hip hop I would PROBABLY agree with you (depending on how much potential I saw in an artist). But thats not the case for me or Dark Knight... Unless Dark Knight is a successful producer that has a line up of people waiting to pay him big money for his beats. In which case he could easily turn down opportunities.
Personally, I'm not impressed. It's not anything I'd want to listen to. That being said, there may still be a market for them. If folks will listen to the crap that's out nowadays, then they'll probably like them too.