There are always excuses. Everything is too hard until you actually do it.
Your argument is akin to being told that on average Women are shorter than men and then you say, well I know a tall woman.
There are exceptions but the vast majority of us can accomplish this, we just don't prioritize it. You get what you prioritize.
Choice isn't binary, it's a continuous distribution. There are thousands of factors influencing the power you have over your weight. That's why I'm thin and I don't try at all, and other people are overweight and cry from trying so hard.
Can you just make the choice to solve P versus NP? Or climb K2? There's a lot of factors that affect a persons ability to make any choice. Willpower, knowledge and experiences, time, intelligence, etc.
There's thousands of factors that influence you making that choice, some factors in your blood, some from your childhood, and some from how your day went.
I'm very lucky that the stars aligned, so I don't have to try at all. Really, zero effort.
Others have to try very, very hard every day of their life. They need to think about what they're eating constantly. Do you know when I think about what I'm eating? Never. I just eat whatever I want, whenever I want.
it's a lot easier to prioritize it when you have time, money, and energy. that's my whole point. you are in a position that enables you to manage your weight effectively. many people are not.
There are exceptions but the vast majority of us can accomplish this, we just don't prioritize it. You get what you prioritize.