If there are good effects of alcohol (like the effect that small amounts of wine are supposed to have on heart health) that can be proven true, they absolutely should be publicized. Now, this is not something that the government should be doing. The government should not be promoting alcohol, but if there are true benefits to using alcohol, it would be dishonest and unethical to ban scholars or even the alcohol industry from publicizing them. The truth in such matters should never be banned.
So, I would say that the good effects of alcohol should be promoted but that it is up to private groups and not up to the government to promote alcohol. It would also be wrong for the government to suppress the truth if there are real benefits (as yet, it is not 100% clear that there are) to drinking alcohol.