You're seriously going to argue that those poverty level college educated people in the OP chart are just interns?
No, I'm seriously going to not argue anything of the sort and actually argue the exact opposite. There were four short sentences in that post and I don't see why it was so hard to read all of them instead of stopping after the first three.
The reason that we can be picky about who we're going to take on as a free intern is because there is a lack of other viable options for the people in our pool of interns. If they could get a decent job which would pay them a decent salary and start them out in a decent career, that is what they would do and we would be left hiring the idiots who didn't realize that. Those options aren't out there, however, and they're kind of stuck with the bullshit choice we're screwing them with or something crappy which doesn't have a potential upside somewhere down the line.