You might want to read up on what it is. It’s not like scraping a callus off the side of your foot.

Even mild may involve removal of bone and realignment of muscles, tendons, and ligaments surrounding the joint.

Source: https://www.hopkinsmedicine.org/health/treatment-tests-and-t...

Your link has: "Most bunion surgery is performed under ankle block anesthesia, in which your foot is numb, but you are awake. Occasionally, general or spinal anesthesia is used."

I do not know. But they do according the source I linked.