I don’t agree that both parties have to agree that something is degrading for something to be considered degrading. When someone considers it to be degrading that their likelihood, voice, way to talk etc. is used to produce porn, I would say it is degrading to them regardless of whether or not that porn is sent around.

I also think it has an effect on how you treat other people. Especially those you use to produce porn. There will probably never be a study about this, though. Because I guess it would be seen as unethical to test. Which already speaks for itself…