If someone got so drunk that they had to call into work once or twice a month for a hang-over, wouldn't you tell them to figure out how to stop that?
I hardly think that getting drunk can be equated to accidental glutening. No one chooses to be glutened.
A lot of this has to do with lifestyle, and again no one can judge someone else from the point of view of their own lifestyle. People who live in the country miles away from the nearest town are less likely to be run over by a bus than someone living in the city. It's the same with celiac disease. Some people can stay home, cook each meal from scratch, and be 100% in charge of their lives. Other people have spouses and kids who aren't as careful with gluten around the house and jobs that require frequent lunch meetings. Every person has challenges, but each person has different challenges. It isn't about making excuses, not being responsible, lacking intelligence, or being a wuss.