I love your choice of the word “butchery”. After all, we are mammals, just like the cow who gets carved by the butcher for my steaks.
Several years ago, I had the same Mohs surgery for the basal-cell carcinoma in the middle of my back and the side of my neck. Now, I’m dealing with actinic keratosis on my right ear. So far, they’ve carved out two layers on the ear and I’m waiting on the prognosis of that 2nd slice. It looks like I’m wearing a red pierced earring the size of a dime above the ear lobe. As a teenager, I sunburned many times and 40 years later, I’m now paying the price.
Sounds like we’re pretty much in the same boat. Fair skinned northern European for me. When young..40’s/50’s.. we played in sun with no cares. Got some serious sun burn for efforts. Lake Michigan life guard 2 summers. All sun damage cumulative over the years. Decades later showing up as actinic keratoses and skin cancers...mostly on nose..and routinely burned off with liquid nitrogen. Mohs surgery a modern version of Chinese death by a thousand cuts...which was no joke if one cares to Google images of same!
Good luck!