Yeah, that's just TMI.

I don't think anyone ever pressed for more details after a coworker said "I had some issues with my health".

People show empathy, and move on. No need to ask for details.

In day-to-day work life or a meet-and-greet, yeah. But this was an executives-only retreat where they were apparently encouraged to drink and made a big deal out of getting everyone to open up to each other.