Well, you're linking to Forbes, for starters. Even though it's a generally a terrible source of information, the article literally
tells you in the headline that "NASA Says Earth Is Greener Today Than 20 Years Ago Thanks To China, India"
It says nothing about the Amazon, which is being cut down and burned down by people. You can see the Amazon as the big tan/light green blob in northern South America in the image in the article. There is just about no net greening. Greening is delta in LAI. You can burn down a rain forest and have a bunch of grass in it's place and there will be no net greening, but on the net it will release a ton of CO2 and destroy the environment.