I know for a fact that starchy carbs made me fat. I can have them in huge amounts 3 times a day. In my culture we mainly eat starchy carbs with sauces or soups so, it's the main dish, kind of. Whatever can be really called food in my culture is a starchy carb.
I seldom binge, I'm not a sugary food lover, I hate food with loads of fat and have them truly ocCasionaly. However I'm super fat.
So for me slimming down equals reducing my amounts of starchy carbs consumption.