Thats not the scenario the scenario in the example was walking up to the staff and asking "I would like X" and then instead of selling you X they ask why you want X and would you not prefer Y?

Very annoying, I want X thats why I asked for it, I dunno if I want Y because I didn't spent time researching it like I did X. I want X not an argument there are lots of other place I can buy X if you are going to be difficult about it.