Morning,
I have been pondering the same question. I'm scheduled for surgery next month, and I haven't decided if I will talk about it at a meeting or individually with OA friends. I'm inclined not to.
The subject has come up before, and my opinion in the past (before I was considering it for myself) was that it was an outside issue, as you mentioned. I agree that it seems similar to discussing Weight Watchers or other specific diet plans.
Other people in my fellowship have come in and shared that they were going to have the surgery, and while i appreciated their honesty, i didn't feel that it had a place in the meeting.
i really don't know what i'm going to do, so i, too, appreciate any experience strength and hope anyone could provide.