I would imagine so, but that's not the point I was making. I'm confident if they are able to do this, I must have agreed to it somewhere along the line when I created an account.Off the top of my head, if Amazon can delete a book from a kindle, I have to imagine they can delete one off of your laptop? The point being it's yet another ongoing monitoring, powered by server farms.
The point I was making is using the app on a tablet or computer is likely more eco-friendly than using an e-reader even before the 50 book download mark.