The supposed health benefits of wine are kinda bogus, as I understand it. For starters, the anti-oxidants in wine aren't anything to write home about -- in fact, they have nothing to do with the alcohol at all, but are completely incidental. You could get greater health benefits by eating a vegetable or a piece of fruit.
In addition, you've got to question who benefits from the blood-thinning aspect of wine. I mean, people who have moderate to severe artery blockages may be well-served by a blood-thinner (alcohol or otherwise), but someone with excellent cardiovascular health would *not* obtain any health benefits from consuming alcohol, as their blood does not need thinning.
There's an overall category of "news" reporting called "People love hearing good news about their bad habits". So, any crap story you may see about eating chocolate being associated with weight loss, or moderate consumption of bacon being associated with higher well-being, it is worth doing a little critical thinking, and possibly trying to discover what data was used, and whether the conclusions drawn from the data are valid or not.
I am reminded of how it was reported (a couple decades ago) that cigarette smoking appears to prevent alzheimers. Many news outlets picked up this story because it was interesting, and because it was reported in a fairly well-respected medical journal. Well, upon further analysis, it was widely agreed that a better explanation (of the same data) was that cigarette smokers commonly dropped dead of other causes before alzheimers ever had a chance to set in. Paints a very different picture!
Anyways, back to the specific issue of alcohol: the US Dept of Health and Human Services classifies alcohol as a known human carcinogen. Also, the World Health Organization lists alcoholic beverages as a Group 1 carcinogen (the highest group) -- along with substances like tobacco, formaldehyde, and asbestos, etc.