I'm not a miserable cow: if you work in a coffee shop I am happy to greet you, smile, say please & thank you. But I really really don't want to tell you my name, like I'm at a group therapy session. I am quite introverted & self-conscious and that kind of thing makes me want to run screaming.
Mind, I hate Starbucks so am unlikely to go in there but read about this policy in the paper & wondered what I'd do should the situation arise...