Because the transmission of your information TO the data centre, and then FROM the data centre TO the recipient travels across other servers/infrastructure, and these are not owned by Apple and are likely powered off of coal/nuclear/environmentally devastating megadams/etc.
Also "less bad" is hilarious.
It takes energy to build/maintain these data centres and generally that's done on the back of diesel.
If we didn't use computers it would be better than if we used computers powered off of renewable energy that required fossil fuels to make.
Full disclosure - yes I am using a computer. Hopefully in the next 10-20 years I won't anymore.
Here are some fun facts:
"Transporting data now uses 50% more energy than world aviation."
"20 years ago the Internet used 0% of human energy consumption."
"Today, the digital economy uses 10% of the world's total electricity ."(of which 50% comes from coal).
"That amount of energy is the same amount that was used to light the entire planet in 1985."
These are in this book -
http://www.worldcat.org/title/age-of-earthquakes-a-guide-to-the-extreme-present/oclc/903187876