Go to the People’s Republic of Boulder Colorado (one place among many), and walk into a shop that sells crystals (even if you are going in there to look at and potentially buy a geode) and see what happens when you have a cross on your neck when you walk in.
You will get “the stare.”
What a bizarre example, even if it is true that someone in a new age religion store might look funny at a common cross necklace on a female, something that they see everywhere including parties.
It sure doesn’t support your claim of “In some areas of the U.S., customers would not like it if they knew a Christian was working there.” You also used the word “region” as “areas of the United States.
I haven’t heard of people boycotting stores in regions of America because they learn that a clerk is a Christian, just as most Americans are.