Earlier quoted context omitted.
Citations provided in original comment. Take it up with national geo if you have isssues with it.
Meanwhile, from the other link (which also has numbers in the 10s of thousands of tons, not millions): "Cutting down on the amount of plastics we buy and learning to use this tricky material sensibly is still one of the most effective things we can do to live responsibly, help the planet, and inspire others to do the same. To find out how you can help make a change, check out One Green Planet’s #CrushPlastic campaign…
The fact is that we need to address both fishing and consumer use. Over-focusing on either one could be seen as distracting from the other, but it's not particularly helpful to bash other environmentally aware people over it. The problem is the people who don't even know or care.