You are doing a grave disservice to those who want to lose weight, and to those who want to avoid gaining it. Please look at these quotes, and keep this in mind:

People can do what they want, but speaking as someone who has put on weight (40 lb) and took it off more than 5 years ago - PLEASE PROVIDE ACCURATE AND HONEST INFORMATION FOR THOSE OF US WHO WANT TO MAINTAIN OR LOSE WEIGHT. That's what worked for me, not this ridiculous "bad genes", "bad glands", "bad metabolism" approach that's meant to convince people that what we weigh is not a result of what we put in our mouths and how we use our bodies. The jerks that write those emails to you will never believe it anyway, and it misleads the people who are really looking for good information.

Your quotes, and commentary:

"And, in any given population, it may not be true that the fatties are eating more or exercising less than the skinny folks."

In 99% of the cases, looking at two people of the same age who get the same amount of physical activity, the one who puts on 50 pounds over 5 years is eating more than the one who maintains their weight. Words like 'may' try hide this important fact, but it's the reality. And for people who want to maintain or reduce their weight, it's important to know.

"The people who happen to be at the fattest end of the distribution got there in large part because of their genes. The skinniest among us are skinny in large part due to their genes."

That is just not true. People who eat more weigh more. That's not a moral statement, it's a fact. Want to fatten up a cow? Reduce its activity and feed it more high-calorie food. It always works! There is nothing morally wrong with being fat, or morally righteous about being thin. They are both entirely a result of how much we eat, and how much exercise we get.

"At the same time, dieting and exercise regimes rarely work in the long-term."

Again, not true. Take the person that gained 50 pounds over 5 years, and has now maintained that weight for 5 years. That person may be overweight, but they are absolutely on a successful "diet". There is no magic "set point" - that person has changed their eating behavior successfully so that they're no longer gaining weight. People's lifestyles and the food marketing industry do make some changes difficult, but people succeed every day. That's important for people to know - not for perception, but so that people can make rational, effective decisions.

"In absolute terms, a skinny guy might be consuming many more calories than a fat guy, per pound of lean body mass."

Where's the evidence for this? Two people who weigh the same and get the same amount of activity - the one eating more is gaining more weight, end of story. Do you have a study or any kind of evidence to back your claim up? The reality is, people get fat by eating, and most people get fat eating in their cars and eating in private.

"We make a moral judgment when we say that fatties are more likely to “overeat” than other people."

No we don't. It's a fact, and if you're the kind of person that insults fat people, you're a jerk regardless. People get fat by eating out of proportion to their physical activity - because work is stressful and sedentary, and they got some misleading health advice about how chocolate is good for you, or they have too many demands on their time to work out, etc, etc. Again, what these people need is good information that will help them accomplish their goals.