Void Argument.
I've personally went through a weight loss process, and so have people that I know. I know how it's done. The dude from your other article is just playing the victim card (like the lady mentioned in the OP was doing) and using that as an excuse for why people gain weight back again. People hate being responsible for their own actions. They love to blame others for their misfortunes.
Albert Fuchs, MD is correct about how hard it is to lose weight (and to break addictions). I disagree with him about there being little knowledge about how to lose weight successfully. I have done it, my cousin has done it, Mark Dice has done it, and so have countless other people. The problem is that there is A LOT of misinformation out there that gets peddled by various nutritionists, food industry, government, etc...
Then he goes on a completely unrelated tangent for a while...
Then he brings up this "beauty" of an argument...
"Many people occasionally fast for a day. This results in a small weight loss. Without an internal set point for weight, that weight loss would be permanent or would fade very slowly. But weight loss after a fast usually disappears within a few days, suggesting that hunger is increased for the subsequent few days until the weight re-normalizes."
"Occasionally fasting for a day" is not how one keeps weight off. At best, one might lose a pound as a result from doing that. Daily fluctuations alone could bring that weight back, so DUH the "weight loss" disappears. That's not a suggestion that hunger is increased until weight re-normalizes. Instead, that shows that the person hasn't changed their eating habits at all. No wonder they aren't losing weight!! They haven't changed any of their habits.
Then he gets into various other excuses... There is no "increased hunger" that is apparently out of one's control. When I initially switched my eating habits over from two large meals a day (plus pre-bedtime snacking) to one large meal a day (sometimes a large meal and a smaller meal) and ZERO snacking, I had "hunger pangs" during the times that I would typically eat at", as my digestive system was ready to digest food at those times. After a few days of 're-training' my body, I no longer get hunger pangs at those times. Now, I only get them around the time that I eat my one large meal. They don't mean that one is hungry, rather, that one's body is ready to digest food due to how and when one has trained their body to expect food intake.
Then, he mentions a study (another BS 'subjectively-based' study, but I'll not get into that) that shows that decreased caloric intake results in weight loss, but then makes excuses as to why people gain the weight back instead of just admitting that these people have since increased their caloric intake again. STOP. MAKING. EXCUSES. You increased your caloric intake again; you resumed back to your bad habits again. That's why you gained your weight back again. That's why the myriad of diets don't work long-term, since people don't make a permanent lifestyle change. They revert back to their old ways. That's why one of my uncles gained back weight after he lost a bunch on a low-carb diet. He stopped doing the low-carb diet. He reverted back to his old ways. He didn't make a permanent lifestyle change. My cousin and I ARE making permanent lifestyle changes. We are not going to revert back to being out of shape and overweight.
Then, he drops this doosy on us...
"I can choose whether to have a snack now or not, but I can’t choose to fast for three days or to eat much less than my caloric needs for a month."
Ummm, yes one can... But all that's needed to lose weight is to reduce caloric intake. Exercise assists in doing this, so that it need not be as much of a reduction. People take in too many calories too often (and calories that don't yield much nutritional value). That is the main problem behind obesity, diabetes, heart disease, etc...
** There is no such thing as a "weight thermostat". That's just excuse-making BS for lack of willpower.