Much ado about nothing.

This is commonplace in many areas. Theatre, music sport, politics etc. (Do you get paid for your work for the Labour Party BT? They have loads of interns too)

Did you complain about the Greeters who worked voluntarily during the London Olympics?

I never went, but they were regarded as being a notable part of the success of the event.

Do you object to all volunteers who work at every corporate event?

https://www.theguardian.com/sport/20...-happy-to-help