I think that reaction stems more from the comment outright seeking to create a hostile atmosphere about it, not from being clear on preferences in itself.

It's the same thing with customers who make a big scene about a missing fries or something. 99% of the time it's not a problem and nobody cares - here's your fries, have a nice day. 1% of the time the person cares less about the fries and more about being hostile about it on principle/for fun/for respect/because they are in a bad mood/whatever, and those are the ones that suck to deal with when you're there but not in charge.