I believe it is already pretty known. It is one of the better and more reasonable arguments against increasing the block size too much that I've heard, in my opinion anyway. As blocks get bigger, the propagation time would also increase and amplify the effect you describe. It puts pools on slower connections or with inferior software/hardware at a greater disadvantage. Or, even the opposite, for example, a large pool or set of pools in China could build blocks off themselves or each other faster than they could propagate it elsewhere.