It’s partly to do with that, there would probably (don’t know the figures but fairly safe to assume) be a higher case of addiction within crystal meth users and other hard drugs than with gambling.
You’re right in arguing that it is hypocritical for him to argue against gambling but more importantly where do you draw the line. Do we not have bank sponsorship (cough Royal commission cough)? What would fast food considering how obese we are as a nation?
If cigarette companies cannot sponsor or sell their products at sporting events then an argument can be made for placing the same restrictions on alcoholic beverages.
Banning cigarettes and alcohol would cause more harm than good. Schizophrenics rely on cigarettes and alcohol to calm their nerves. The tax from smokes and grog helps prop up the welfare system.
Processed food is probably the biggest problem in society.