Much like my former doctor, you're dismissing a genetic condition as being caused by weight. It's an idiotic thing to do and it shows that you have the same bias which blinds you to the actual facts. The moment you found something that suggested that weight had an effect, you completely dismissed the genetic aspect of the disease. Your response is exactly why doctors need to be able to recognize their own biases.
You clearly don't understand the article you linked. At best, losing weight might slow down the destruction of the glomeruli, but the destruction is inevitable. It's a genetic disorder which cannot be fixed by losing weight.
My doctor dismissed them my symptoms saying "just lose weight and you'll feel better", which was absolutely wrong. Losing weight would have reversed the damage that was causing my symptoms.
In fact, the one thing that would have helped more than anything else would have been going on a protein restricted diet. No such advice was offered, however, because protein restriction isn't something you would prescribe unless you'd diagnosed a condition that called for it and my doctor was too much of an asshat to do any testing. I wasn't diagnosed properly until I was in full renal failure and then it was too late to do anything other than go on dialysis.
I'm not surprised that you have no sympathy for what happened to me. Frankly, you're a lot like my former doctor; an asshole who jumps to the conclusion that any problem a fat person has must be due to their weight. God forbid you should actually look beyond that and search for underlying causes.