Kenji's channel and writing are great windows into how cooking does not need to follow rigid rules and precise measurements to make great food. He substitutes ingredients and uses what he has on hand all the time. Unless it's something like bread or pizza dough, where he needs the correct ratio between flour and water, he never measures or weighs anything. He frequently leaves something baking in the oven or simmering on the stovetop, promising to come back in X minutes, but it's usually Y minutes later because he's been off doing something with his wife/kid/dogs. It seems like he says things like "oops" and "but that's ok" a lot. Cooking shouldn't be intimidating. He shows how approachable and forgiving it can be.