I've visited salad bars many times, and this had never happened to me before:
As I was almost finished selecting various items for my salad today, the person putting various salad items into their bins told me, "I just want to say I appreciate you choosing your items so carefully."
I told her, "I don't want to be that guy who says, 'Well, here I am at the salad bar. I'd better close my eyes, start flinging pieces of egg everywhere, and put tongs face down in the onions.'"
She replied, "Unfortunately, a lot of people do it that way. I appreciate (that you're not doing that.)"
It's good to know that courtesy makes a difference to people sometimes.