I couldn't reliably tell you the difference between a $30 bottle of wine and a $300 bottle of wine but that's why I don't claim to be an expert on wine.
Also, there are other coffee places than Starbucks. Saying barista is an unskilled job because Starbucks coffee is particularly bad is like saying programmer is an unskilled job because all Squarespace websites are equally bad.
But you won't be a master barista right away either.