Doesn't loading the extra co2stats script and image from each page use more energy/carbon? What's more, it reloads itself every 5 minutes, even with no activity by the user!

Carbon preacher hypocrites! They probably heat their homes with coal-fired Franklin stoves, too.

No, because he doesn't want random code running on his machine if it doesn't benefit him in any way.

Personally, I block Google Analytics, because fuck Google tracking me on every site I go to.