Do you believe it is or is not impolite to have headphones/earbuds in when you are checking out at a cafe or takeaway counter (i.e. not a sit-down restaurant)?

Do you believe it is or is not impolite to have headphones/earbuds in when you are checking out at a cafe or takeaway counter (i.e. not a sit‑down restaurant)? Published on April 15, 2021 → Survey conducted on April 15, 2021 on 9703 U.S. adults