Good laugh however I do see the sense in it. You will not receive attitude from an employees bad day. Example would be the typical walmart greeter, zero expression, doesnt really care you are there, misses greeting many that enter the facility, and have zero sincere desire to be where they are.
A robot will always greet you with a friendly attitude, if you are attractive you will not be stared at as you walk by, if you say hello it will say hello back, sadly robots can easily be programmed to be a more satisfying interaction and more respectful than with the typical employee who works those kinds of jobs.
In Japan they have taken it way farther. They have robots that will greet you in the entrace of a 50 story building, use facial recognition to identify you, call you by your name, have pre programmed where in the building the potential customer has a meeting, walk them to the room, and drop them off with whoever they are there to see. Absolutely incredible.