I note that you've been a member since '02. I assume you sat around with RPG books for six years just wishing you could play but for the overwhelming cost of ink and paper.
Seriously though, I lose zero functionality with this change. When I went to play, I hit print on the character sheet. One of my players, uses a sheet of notebook paper and a pencil. I'm pretty sure he isn't worried about the roughly 2 cents it costs him.
That being said, I understand the complaint for those who travel a lot and take their laptops with them and like to play around with the CB. That is a legitimate concern. However, I also think that this is a pretty small percentage of the actual usage of the CB. To me, this smells a lot more like the "Oh my god, WotC created a new edition and its not the exact same as my favorite edition!" arguments.
The only "lack of functionality" this really creates is for those who only want to play with their laptop running and are not able to play in an area with internet. I still think this is a pretty small segment, especially considering how long D&D has been around. Additionally, while I realize everyone's mileage is different, pulling players away from their laptops, iPads, phones, etc. is not particularly bad since those items in my experience only tend to distract people at the table.