Setting legality aside, what 'level of piracy' is morally or ethically acceptable to you?
All levels. I think that human beings are morally and ethically obligated to do anything that causes a corporation to lose or miss out on profits. They exploit and disrespect our power as consumers by changing EULA after we purchase products, I see no reason not to rob these mfs blind.
If it's an indie game I'll pay for it after pirating, if I enjoy the game.
I just feel the need to tell OP that they are appreciated for posting this, as well as their work in the comments section. Thanks.