No, no, no. I'm super against low carb diets. They're terrible on your health. I know that first hand. I'm just saying this is the premise behind them. Honestly, if someone is obese they should be getting a diet plan from a health professional. You need one tailored to your needs, and you need to make sure you put off pounds safely. It's more than just getting up and exercising and eating less.
That's cool and I'm fine with that, but it's not ok to give misinformation about it, what you gave isn't the premise behind them. When you go on a low-carb diet, you're switching the carbs for fats, not proteins. The proteins aren't meant to supplement the loss of carbs, the fat is. To be fair, that's where most people on a ketogenic mess up. Not having a high enough fat intake with too high of a protein intake.
Not every diet is going to work for everyone. We're all unique individuals. Not everyone can thrive on a low-carb diet, just like not everyone can thrive on the food pyramid from the US. I also don't believe that everyone should be getting a diet plan from a health professional. Most doctors here aren't trained in nutrition.