Anyone over 200, or over the normal weight range for their height, must not be admitted into the restaurant. Obesity kills more people than smoking.
Until they put in weight scales and prohibit restaurants from serving overweight customers, then they are just being hypocritical(they really are not concerned about the health of the customers).
Typical logical fallacy used by many nonsmokers. If X causes damage and Y causes damage we cannot do anything about X unless we also do something about Y.
Variation of false choice.