Phil....... you said; "A lot of Baristas who have experience in only one shop tend to get this type of singular attitude." Let me extend that keen observation to include just about anyone who ".........doesn't get out much, and has an attitude to boot." Some who have a deep level of inadequacy, or feelings of failure, find that they can empower themselves by identifying themselves to strangers as "an expert", and then passing on "inside information", as though they're being benevolent to an underling. (Come to think of it, I've had bosses in my early career like that!?) The trade-term we now use in our industry to identify that behavior is "jackass."
Sounds like a Guinness spoon - the kind that some bartenders use to help them build black and tans. I still don't get the purpose in coffee...
I'm with Al on this one.