Related to this, unpaid labor in academia is a HUGE issue.
I want to pay this kid because I am benefiting from his work, but without a grant, it would be out of pocket (I applied for a grant so that I can pay him and others like him).
The people who can afford to work for free are people who are privileged enough to not have to work several dozen hours each week for money to support themselves.
Stop reinforcing this privilege.