I guess he would have a much harder time getting a feeling for a city where he could not casually pick up what people are talking about due to language barriers.
Though, at entrepreneur meetups/event, it's funny EVERYBODY speaks English. Just yesterday at hy berlin, all the pitches were in English and 1/3rd of the people getting food/drinks are non-Germans. So almost every conversation between 3 people had one english speak and was thus held in English.^^
I believe in the post he said that his views are by no means nationalistic and that he feels someplace like Atlanta has the same problem as Munich. But I actually think this was in a "Startup Hubs" essay.