This is a depressing post, because it's true. People will always judge. And this is the internet. And that's reddit. Unfortunately, that sort of thing is to be expected.
I agree with everyone else about inner beauty. But this is a post about the exterior, which is what people notice first. Inner beauty takes longer to come to light. He's a perfectly normal looking guy. No one would say anything about there being a disparity in their looks if his weight was average. I can understand what everyone's saying, but comparing 'horrific injuries and disfigurements' to excess weight is not quite the same is it? Much of the time, excess weight is optional. Injuries and disfigurements are not. Personally, obesity would concern me since it is a major health issue and brings with it the risk of diabetes and other comorbidities and a decreased life expectancy. Everyone has a responsibility towards their own body and health. But love doesn't care about that sort of thing and doesn't work that way. People like what they like and nobody should ever be shamed for looking a certain way, especially just because they deviate from what's considered the norm.
That picture reminds me of a couple I know. Even when we were in high school her preference was for larger gentlemen. Her biggest crush then, as I recall, was on someone who looked like Cee Lo Green, but bigger. She is herself still a very beautiful and very popular girl. Her husband is at least 3-4 times her weight, isn't exactly tall, has cystic acne, and is perhaps not conventionally good looking. But he is the best looking person to her and they are very much in love. That's all that really matters in the end, isn't it? Love is a beautiful thing.
Everyone has issues and insecurities with their bodies and their looks, most people are just lucky enough that it's easy to hide and not immediately noticeable and isn't socially stigmatized. Also, no matter how conventionally good looking you are, there will always be someone who puts you down for your looks because to them you're ugly. Celebrities can probably vouch for that.