I'd argue that it's not impressive at all.  The fat shit had surgery, for fuck's sake.  He somehow managed to eat his way into a nearly-700-pound freakshow of a body, and then had to have his internal organs chopped up to fix the problem.  Even then, after very nearly three years of weight loss, he is still super morbidly obese.  If you actually do the math, to lose the weight he's lost, he's maintained an average calorie deficit of about 1200 calories.  This sounds like a great achievement, until you realize it's a deficit from his ridiculously fat-inflated TDEE.  So, using round numbers I pulled out of my ass, let's say he had a TDEE of 4500 calories a day at his highest weight.  He cuts it down to a still-disgusting 3300/day and suddenly he's being praised for reaching a state of obesity of which he should be ashamed.  And, because he took the easy way out with surgery and still doesn't really understand what is and is not a healthy diet (look at his Instagram--giant piles of deep-fried, sugar-covered zeppole on the first page!), he'll likely soon plateau and feel he's reached his "set point" rather than realizing that even though a 700-pound behemoth can lose weight on ~3000 calories a day, he's got to actually eat a normal human amount to become a normal human.  I'm disgusted that anyone here is impressed.