No, you are wrong.   If you go back and READ what I posted  you will note that I said Coal fired power was the largest source of HUMAN caused CO2 emissions.  The NASA OCO emissions project measures CO2 balances with high precision and indeed natural sources are, and always have been, the greatest contributor to atmospheric CO2.  Nobody has ever said that HUMAN CO2 is the largest source of CO2, it is however, additive to the balance of CO2, CH4 etc. 

From the article you quoted, "OCO-2, launched in 2014, gathers global measurements of atmospheric carbon dioxide greenhouse gas .... -- the principal human-produced driver of climate change"

Also from the article,"...In some years, natural processes remove as little as 20 percent of human emissions, while in other years they scrub as much as 80 percent...." 

Anthropogenic GHG's are a significant part of the CO2/CH4 balance and of those, Coal Fired Power is singularly the largest by far.