Yes, seeing Starbucks that high on the list is suspicious. Awful stuff. A local roaster explained to me that normally coffee is roasted at X temp for 14 minutes but that Starbucks roasts at 8 minutes at a very high temp, hence the burnt taste–which, apparently, some people like. However, I suspect that part of their popularity is a younger customer base that likes the flavored feu-feu trendy …

​https://www.city-data.com/forum/food-drink/3390140-31-coffee-brands-rated-best-worst-5.html