If they bother you ignore them.
If however you believe your Cheesecake Factory Farmhouse Burger is a healthy selection because after all how bad can a burger be, you may welcome learning it's got 1,990 calories, and 4,579 mg of sodium
Some are accurate, some are not, but if a restaurant is off, there's a good chance everything is under estimated, so you can at least compare the choices on the menu and make a healthier decision.
But most people choose to believe they are inaccurate, so they order that Farmhouse Burger anyways.