Eh, it depends on the job. It's not retail, but waiters are always taken aback when my wife and I are understanding about any delays or them being out of something. You can always see them bracing for the abuse when they tell us the issue.
We've both worked in retail and food service, so we get it.
When I worked retail, we would get shitty customers all the time, but one of my super powers was being able to diffuse the situation without having to get management involved.
I'm over the Atlantic from the US, it would be truly unusual if someone actually blew up at service staff like that, let alone that being a common enough occurrence to trigger PTSD-adjacent responses from them.