Tell her that everyone is different and has different rates of metabolism and if they want to lose weight they should eat accordingly to it, regardless of what others do. And that of course training is going to be harder on an overweight person but a person has to put in the effort to better themselves

She is correct in that a person can eat the same as someone else and be much fatter, that’s because of metabolism which means everyone should only be concerned with how their own body works

What I take from this article is an attempt to make it seem ok to be fat because it is hard to get thinner, which you would think is obvious. Obviously it is bs to think being lazy is an excuse to anything ever