The anesthesiologist is concerned with your airway, he didn't operate on you wrist. As the individual responsible for airways, and an expert, he is entitled to issue sound advice. You are entitled to ignore it.
The anesthesiologist had an opportunity during the pre-op appointment to counsel the patient re smoking.
Taking advantage of the patient being on the table to utter a suggestion like that is a bit shady, IMO.
He's like liberals who can't help proclaiming their politics regardless of the situation.
Surgery is a time to carry out professional duties. Anything other than that would be to offer comfort to the patient, not an admonition.
That is solely my opinion.