I honestly don't understand what's unbelievable about his diet. Amber wouldn't stick to a drastic change and she's too fat to stand and cook. It's only two weeks long and realistic. Amber isn't some meal-prepping fitness guru. She's a human blob and that's all she can do.
Similar thoughts here. I guess I just figure that a weight-loss specialist/surgeon, who has treated many obese people (most of whom are likely quite a bit lighter than AL), would take one look at AL and the only objective would be to get as much weight off her as possible in a way that she could comply with (in theory). High blood pressure, swelleen, etc., all of that is secondary to the 600 lbs of lard she's hauling around, and could be addressed after some weight loss.
It's (understandably) pretty common to nitpick the shit AL puts in her mouth and sound the alarm about sugar, salt, etc., but this bitch loves to get lost in the details and create complexities that she can whip up as excuses to ditch a plan. "Not enough calories!" "Too much sodium!" "Didn't restrict me enough, it allowed me to have pizza!" I think she's past the point where what she puts in her mouth actually matters, it's the amount that needs to be tackled first. If she just took what she regularly ate, cut the portions in half, and actually made an effort at walking more, she'd lose some weight. She'd stall eventually, and have to get more restrictive, careful about nutrition, etc., but at this point she just needs to stop stuffing her face.