They’re at work, they’re dealing with people all day, making them food and drinks and socializing a little bit. And it’s a coffee shop, not a library. People talk, they laugh, music is playing.
What I do mind is the guy sitting across from me complaining about the noise they make, calling them “ninnies.” When they talk and laugh, they’re doing it with each other–it has nothing to do with me and is easily ignored. But when a dude addresses me directly, *that* breaks my concentration.
Quick note for everyone who works in coffee shops: You are not in a library.