I think about this differently.
A person's weight is largely a product of social circumstances and environment, so any weight can in a sense be "natural", or at least expected, depending on one's surrounding circumstances. (For example, what kind of food is available to go in your body, or how safe and easy is it for you to travel actively outdoors, etc.?)
Research suggests that we can do surprisingly little to control our weight on an individual level (e.g. personal diet and exercise), compared to what we can do at a collective level (e.g. building healthy food networks and activity into our local community environment).
Some really interesting research proposes that obesity, malnutrition, and starvation could all effectively be solved just by changing the way the world's food system works (especially economically).
I would think that representation for fatter bodies isn't going to have a significant negative effect compared to the negative impact of what's happening on a bigger social systems level. It really seems to me that it's the larger system that's unhealthy, not individual people or their appearances.
Safe for consumption is different than safe for the environment. GMO’s are not safe for the environment.
https://www.amazon.com/Stuffed-Starved-Hidden-Revised-Updated/dp/1612191274/ref=nodl_
This is a great read. It outlines the relationship between poverty and obesity. It really changed my perspective on fat people.