Does that make it a bad argument? Say we accept that Bitcoin causes damage to the environment, do we then ignore the energy expenses of the default because...I

Does that make it a bad argument? Say we accept that Bitcoin causes damage to the environment, do we then ignore the energy expenses of the default because...I'm not sure where you are going with this. While I don't know the incentives of the author's, I suspect a reason they target Bitcoin energy expenditure because it's easy.