The gist of it was, that there is no observable correlation between the intake of saturated fats consumed, and heart disease. There is however correlation between consumption of meat products and heart disease. A point was made specifically that balancing the diet with vegetables specifically counteracts these negative effects.
http://www.amazon.com/The-Big-Fat-Surprise-Healthy/dp/145162...
This article will give you a good primer on nutrition with a focus on gaining weight:
http://www.barbellmedicine.com/potpourri/584/
If you have any other specific question I'd be happy to chat through them but HN is probably not the best venue. My contact info is in my profile, I love talking about this stuff so feel free to reach out.
So I agree with you, and my point is not to say that carbs are good for you or bad for you, but that anyone saying a major macronutrient group is good or bad without context has a large burden of proof.