No it doesn't. You use up more calories when you weigh more. If you eat an apple a day you will reach an equilibrium where you have just enough extra weight to burn a number of calories per day equivalent to an apple. 95 calories in an apple will still get you to about 9.5 kilograms extra, which is a lot, but not near 50 pounds and it won't increase without limit.)

The information I have seen suggests a pound of fat requires 2-3 kilocalories per day to maintain itself, which implies a range of 30-47.5 pounds from a 95 kilocalorie deviation, which would be 13-20 kilograms.

I have no idea how accurate that is, but it doesn't matter too much, as the underlying point remains the same: People's expectations of food consumption necessary to be overweight are entirely inaccurate. Fat people think thin people must be eating almost nothing at all, thin people think fat people must be eating three hamburgers per meal, where the actual difference is quite small, relative to our out-of-whack expectations.