Data centers and data transmission use a ton of energy. Not all of that energy is coming from renewables yet. And even when it does, there's an environmental cost to producing solar panels, wires, etc. Granted, it's way better per unit of information than paper distribution, but in aggregate, it's not always better. REDUCE, reuse, recycle. (And yes, even me being online and doing this reply takes up a tiny bit of energy that contributes to climate change. Come on fusion!)