Progressivism and conservatism are not equivalent to reform. I disagree with your assessment insofar as the terms are commonly used today. Now that gay marriage is legal, is this now a conservative cause? Would it now be progressive to argue for it to be banned? If I argue for zero federal income taxes, is that a conservative cause or a progressive one? How about if I argue for doubling the income tax?

The problem is that drinking in and of itself is not immoral. But certainly immoral behavior can become exacerbated by excessive alcohol or drugs intake. That much should be obvious on its surface.