Do you have a link to more information somewhere? I'd like to know more about what NordVPN is doing, if true. It's certainly not what their customers expect.
I agree with you if you're talking about tech savvy users. But I think NordVPN has enough users who don't know what's going on under the hood that they might not understand the implications of forwarding potentially copyright-hostile packets.
That blog post does not say that NordVPN uses customer VPN endpoints as proxy servers without the customer's consent. It talks about the possibility of setting them up, but the implementation is left to the customer.