Coffee is inherently not a consistent drink. The only brewing methods that don't vary significantly with brewer skill and chance are immersion brews, which aren't broadly used in modern coffee shops. It's surely better to not burn the beans to ash and accept some inconsistency than ruin the drink every time
Not at all - consistency is what they sell. It's like going to Japan from the US and eating McDonalds. Or eating McDonalds in Mexico. Same food, more or less.
