I disagree that comparing Copilot with Pirate Bay is a good argument to make your case (maybe Dall-e is a closer comparison if resulting artwork could contain licensed artwork from the training set). You'd probably have other fronts to use and present a stronger argument.
And let me remind you that I have not argumented on behalf of any side, so I do not think this thread requires arguments against arguments I have never brought forward (it feels a bit more emotional than constructive).