You would think so but you'd be wrong.
You do what you want, it's your life, you live it how you want. I have "been there and done that".
If you allow yourself to gain some fat, you will grow more than being lean. If your body has a surplus of calories, it won't be afraid to make more muscle.
The human body tries it's best to be efficient, this is something you fight when you want to put on size. If you don't give it more than it needs, it will fight you til the end.
The reason many guys today stay so lean while growing is due to the wide range of pharmaceuticals they use. Back in the day, and for anyone not on such drugs, a bulk is the best way to make gains. I'm not saying you have to become a fat-ass, but you do need to get fatter than you currently are.
I will not argue this point, it's useless. You can either try it yourself and see, or just continue to think its bullshit and never explore other possibilities. The choice is yours.