the sodium is wacky, but lets be honest the average American eats hella sodium every day. If it aint from Chipotle, its from somewhere else.
As for the calories, besides the tips like "skip the sour cream and guac", you also need to understand that everybody has different calorie/macro/micronutrient needs. I swear the 2000-calorie a day thing was written with an average sized woman in mind. I'm 6'3'', I work out pretty intensely and have a decent amount of lean body mass. 2100 calories is my fat loss goal, lol. 2500 for maintenance. That gives me a hell of a lot of wiggle room, like a Freebirds burrito in-between my other high-protein/mid-carbs/low-fat meals of the day. Or maybe I'll eat a few spoons of Ben & Jerry's Milk and Cookies after dinner, since I got room in my macros.
There's a reason a lot of your fitness friends and gymrats go to these fast casual burrito joints. And its not like they go there every day. But these articles keep popping up every few months with calorie/sodium count to freak out people, despite being both common sense(lot of food = lot of calories!?!?) and not entirely relevant to everybody.