I have known a number of surgeons in my lifetime that know infectious disease control. They’ll tell you doctors on whole are some one the worst offenders about such practices. My doctor thinks a quick rinse with soap is enough. I didn’t. Fired the guy recently.
I worked with PhD microbiologists. Impossible to be more microbe paranoid than that group of people. They tell me much the same thing about MD’s.
I don’t think it’s stupidity. It’s part ego (Semmelweiss effect) and partly a function of familiarity breeds contempt.