Yeah it’s fucking hard. Because there’s only one way of doing it - complete and life-long lifestyle changes. Combining diet and activity. Forever. I have no empirical basis for this stat but I think weight loss is about a 70:30 diet:exercise issue. If you want to lose weight and keep it off you have to be constantly aware of both and adapt your life to suit. And it’s exhausting and all-encompassing. You have to be really a) able and b) willing to do it. Everyone’s got barriers to it but some have higher than others. Some people are naturally slim and barely need to bother. Again, life’s a lottery.
Anyone who says that for EVERYONE that this is “easy” should be fired from a cannon into the sun. It is not easy.