I have a feeling what this guy means about American yogurt being "horrible" is that it is typically low fat and healthy.
I've tried products all over the world and whenever I hear this type of statement it tends to come from someone who has never looked farther than Velveeta and cheeze wiz. You can buy just about whatever you want in America, if you look a little harder. Heck, I can get my Brazilian Cachaça and Açaí at Ralph's (local chain) for C-sakes. It's a world economy these days.