It's the coffee question. Ask people if they like coffee and look at coffee marketing and it's all about "rich, dark roasts". Marketing focuses on deeply aromatic black espresso. Work as a barista for 5 mins and most of the 'coffee lovers' are ordering single shot lattes with syrup.
And I wonder if the barista's opinion takes into the account that a) coffee at Starbucks is a different experience than coffee at home, and most importantly b) they probably price those single shot lattes better.