No point in calling someone Beautiful if they are not, it is condescending and most people have a reasonable idea of their physical attractiveness.
You can’t determine someones worth by what they look like. Maybe as a society we should stop focusing on appearance full stop (good luck with that). For some of us it is just not a priority. By ascetic standards I am ugly thin or fat, it is what I was born with. While it would be nice not to have people judging me by my looks I equally don’t want people telling me I am something I am not. I don’t worry about my weight from an appearance point of view because it will make very little difference to my chances of attracting a partner or being accepted socially. This is something naturally beautiful people will never understand and it is why we have so much fat shaming. Vanity is a central issue of these criticisers lives but it is not something ugly people experience because it is based on goals that are clearly not achievable regardless of the effort applied. So why bother.
Oh and for the “professor” on twitter, that is clearly nonsense. Actually I would attribute my overweight body to intensive study and long hours producing high quantities of quality output in my field. The fact that this is all done at a desk for often 18 hours a day is why I am fat. I eat like a normal person and it took 20 years to put the weight on. I am not gorging myself on carbs, I have just overdone the calorie intake on a daily basis by an average of about 30-40 calories that is all it took. This idea that all fat people are stuffing their faces is ludicrous, we as a society have just become sedentary too rapidly and our genetic and social dietary habits haven’t had time to adjust. Also these guidelines for calorie intake are not really helpful. As a man I find I need about 1500 calories a day to cover my normal working day and maintain my weight. I was eating around 1550–1600 on average and slowly piled the pounds on. But for quite a lot of people that would seem like a desperate diet. The 2500 suggested is clearly ludicrously high for someone who works in an office. I think humans are just too varied to even suggest averages for things like this, people are not all nutritionists and this could actually be promoting overeating.
Sure you can be fat and beautiful, but it is an absolute rarity. Beauty is about being as close to an ideal facial and body structure as possible and additional weight will just deviate you from this ideal. If you can’t get close to this ideal regardless of weight you will be discriminated against for the rest of your life both socially and professionally. Basically you were born a second class citizen and this is unlikely to ever change. Accept it, and move forward, you can’t change it. Yes it is unfair, but life is unfair, get used to it. You will live your life surrounded by people who can’t relate to being ugly, they have never experienced it. So expect abuse, shunning, hate and ridicule too. Again accept it, because you have no other choice.
I will say it one more time, life is grossly unfair. Accept that single fact and you will quickly learn to make the most of the terrible hand you have been dealt.