Baby G... foods of the earth that are naturally acidic as well as kombucha made naturally that contain the good bacterias; convert into alkaline properties during the digestive process thanks to the nutrients at hand. Sure it's best when not pasteurized.
Technically everything we eat today (obviously) even from the earth now has carcinogenic properties. This article is a bit of a paranoid hype. You can take anything and be selective with facts to debunk it just as much vice versa.
Thing is, if it has worked great for you then don't worry about it. Drinking it in moderate as we should do with anything else is always the safe bet.
Fermented foods are incredible for the gut! These nut cases are out of their mind to a certain extent.