Starbucks’ greatest accomplishment was convincing most people that they liked coffee by including it in, effectively, milkshakes. You can add sugar and dairy to anything and people will like it.
In popular thought, they’ve changed the meaning of “coffee”. People who have never had real coffee now think they like it.
And when those people go into a real coffeeshop and order real coffee, they think it’s bad because it’s not full of sucralose and it comes in a cup-size with an English name.