I am taking it that the "anti zero movement" is the gentleman you are refering to as the antagonistic fellow. I just went to the site in question and read the link. The guy is passionate, I will give him that.
He is WAY out in left field ( only an expression, not in a political sense, please don't trash me for saying it) in his opinions.
I for one wish that every single living being had access to clean water and food. I am not however going to drink only water and send all my soda money to another country to help in their quest for clean water. Most of the countries that do not have clean water for their citizens are either 1) have corrupt leaders who embezzle the aid money and my measly $10 a week won't reach the intended use, or 2) the citizens are of questionable character, and the money would go for some RPG's rather than the intended use. i.e. they want to kill me because I am an American citizen. So why would I want to give them anything anyway.
The bashing of a single soda like he does is crazy. Sure there are sodas that I do not care for but I do not make websites calling for their demise.
While I am not certain I will go out on a limb and say that the person who is in Australia is NOT some guy from Pepsi. The opinions he has are just too "out there".The guy is just a TOOL.
If what you did yesterday still looks big, you haven't done much today.