Elon Musk is a total fool and an idiot, but like others said, this article is hogwash. The satellites do not pose a risk for Kessler Syndrome due to their LEO. They will fall to earth and burn up. They also maneuver to avoid collisions. It is highly unlikely to contribute anything at all to Kessler Syndrome.

Additionally, how are they comparing carbon footprint? Article is behind paywall. The internet infrastructure on earth didn’t pop into existence out of thin air, carbon neutral. The trucks and ships used to lay wire, the mining and manufacturing of everything involved in the process, creates carbon for both. The carbon that would be created to provide access to rural areas as an alternative. If you are going to count the carbon to make and fuel spaceships, you must also count the carbon to make the ships that lay and maintain undersea cables and trucks that maintain cable on land.