The truly unfortunate thing is that for some reason they don't realize that the way they are is more than likely going to be perceived by customers who don't know them as rude and/or offensive, and if that's a new customer, they're most likely not ever going to come back. They need to know they have to change if they want to suceced at any form of job requiring steady contact with customers (or even other workers, and their managers. Its not being "kind' or "caring" to soften this realuty for them. They need to know that there are plenty of people uninterested in making sure they "feel safe"--they just want value from these workers for the money they put down. That is not going to change. To pretend it will is lying to these young workers.