> Seems to be a form of victim blaming.
Sorry, but no. The person you're replying to made some spot on points.
If a person wants to maintain some semblance of physical fitness then they are going to have to work for it. It's astounding that this concept gets lost on so many people, as if having a normal-sized physique should come naturally to someone who lives a sedentary yet gluttonous lifestyle.
Also, to their point about being fat having become socially acceptable. Yes, it is true, at least as far as women are concerned. So much that euphemisms are being used all the time: plus size, curvy, thicc, voluptuous, and so on. I've heard people even use the term "athletic" to describe a thicker person's physique.
> If people tried to follow normal dieting advice, and they failed, do we keep telling them to try harder?
Really depends on how hard they "tried". If a person is actually determined to maintain a good physique, then yes they have to work at it AND they need to be honest with themselves about how much food (as well as the type of foods) that they consume. If someone gives up after a week of dieting and exercise because they don't see significant results or because it's just too hard for them to maintain then that's entirely on them. If they want to then view themselves as a victim, then that just shows a lack of accountability.