Earlier quoted context omitted.
tangent: low-fat diets don't actually help with weight loss
Well, partially true. Fat is very energy rich so low fat diets will typically have less calories and calories are basically the only thing you need to worry about when trying to lose weight.
Calories do count, but hormonal response is a primary factor.
Edit: it's worth noting that a certain amount of fat is absolutely needed and is sating in and of itself.
Personally, I don't think the amount of fat you get (in terms of calories) should be lower than the amount of protein you consume, and should come from better sources excluding refined vegetable oils (which are everywhere). My opinion on this is somewhat based on the relative amounts of fat to protein in sources where you get protein naturally. I also feel that not getting enough fat is a big factor in gallbladder dysfunction and stones.
A lot of my opinions are just from common sense, observation and a lot of reading on relatively recent diet and nutrition shifts, and feel levels/extremes can vary based on general health, metabolic syndrome indicators and outright diabetic progression.