The thing I find interesting about these threads is I am willing to bet when each one who has referred to a fat/obese/curvy/thin/slender/thin person, are probably all imagining different body shapes.
As with all of these polarising debates, some are missing the nuance required and everyone's taking sides. For those that say 'fair enough if you have an illness' - how are you identifying those people when casting your judgemental eye over everyone? Should they wear lanyards to let you know that under your specific rules, they're permitted to be overweight?
I'd doubt many look at Ashley Graham and set out to gain weight to be like her, however seeing her, there is comfort for those who are bigger because she is saying that you still deserve to be happy and wear nice clothes and feel good about yourself, and comfort for bigger people is sadly lacking on many fronts.
Some of those who are naturally slender and who maintain weight easily struggle to understand why bigger body types don't just have a ryvita, go for a jog and sort themselves out. The secret is out! That's all we needed to do all that time! Silly us.
I exercise a lot, and no matter what I do, my body remains in its set point. For some of you, I expect you'd call me fat. I've given up giving a shit about it, which is liberating. Because when I really gave a shit and let it control my life, I still wasn't happy. I eat a varied diet, I move my body and I focus on the things that matter in my life.
At the end of the day, the diet industry is worth billions and is relying on your failure to stick to what ever they're selling. It can be a really viscous cycle for some, so over simplifying it when it comes easy to you isn't helpful.
As a side note, BMI needs to go though, it was developed in 1830 and is not fit for purpose. We need a modern approach that looks at the changing environment we exist in, good research into the health risks of chronic dieting versus being at a steady weight, albeit 'overweight'.
What's being repeated over and over here are really old tropes about health, weight and lifestyle.