just want to point out that your link explicitly refutes your statement. They are not illegal and you linked to a test about legality of unpaid internships:
> There are some circumstances under which individuals who participate in “for-profit” private sector internships or training programs may do so without compensation.
Yes, there is a list of criteria in that section. This job fails to meet several of them, especially number 4: The employer that provides the training derives no immediate advantage from the activities of the intern; and on occasion its operations may actually be impeded;
"But whatever your moral leanings, a judge on Tuesday confirmed what intern advocates have been alleging for years: a lot of these programs are illegal."
"it's hard to predict what appeals court judges will rule on any of these cases."