They are being paid for their labor. That it's low because of the skills being offered, that's not the fault of the payer but the payee for having low level skills.
You answered no but your explanation says yes. If someone is being paid a skill level wage, even if it's low, they are being paid for their labor at a rate equivalent to the value of it. To say they should be getting a living wage means you think a business should pay them more than the value of that labor. When you use the word living wage, you're saying an employer should pay someone enough to support themselves even if it means paying them more than what they are doing is worth. That's paying on existence not skill level. If you believe that, at least be a man and be honest about it.