Ok. This makes sense. You clearly shows that you know you know more on this subject than I do 
But are you saying then for the majority of obese people there is no hope in loosing weight and turning their life around from obesity to a normal size?
I should add "naturally" without the use of surgery.
Well, he does have the word "Tren" in his name. (It's a well-known anabolic steroid among bodybuilders.) But putting on loads of muscle and getting down to sub-physiological levels of bodyfat is very specialized, and it's more complicated than what you need at the moment. Likewise, you should ignore 4-6, for the time being.
So to start, it really doesn't need to be that complicated. Trust me, I've been quite obese, and then got lean and looked great. Most people can do this. You can check my advice above. What I did is what you can do... and you can start immediately by simply by replacing junk food with healthier options, and perform a little light exercise (walking or similar). You should see some progress. Then, if you want to take it to the next level, you can start adding complexity, counting calories and macronutrients, and also add weight training. If you give this a fair and honest try, you're very likely to make big improvements, and you won't need anything extra. But if you're not making progress and are dissatisfied after a year or so, then you might see a doctor, and consider alternatives. But most people really won't need to do that.
If you want, you could check with your GP before starting, to make sure you don't have any underlying health issues. You could also get some fat calipers and a weight scale so you can objectively record your progress. You could also take a before picture, but keep in mind it could be several months before you're happy with the "after" pictures.
For now I'd also recommend skipping low-carb dieting (typically less than 50 grams of carbs/day), because it's less sustainable in the long-run. If a balanced, reasonable diet isn't working, then you might try low-carb dieting or something like intermittent fasting. For more technical info, you could follow some bodybuilding or fitness YouTube channels or join specialized forums.
