I don't think it's a translation thing: I think this was written in English by a native German-speaker, who applied German comma-use habits to English. I'm American, but I spent many of my early years in Germany and attended German schools through the fifth grade. After that my family moved back to the states and I finished my education here. To this day, I still have to make a conscious effort not to over-use commas. After I finish a first draft, a big part of my first editing pass is cutting out extraneous commas. I instantly recognized the comma overuse in the bios page because it's how I'm naturally inclined to write.