While it's a simple argument I always liked what one of my quantum mechanics professors said about quantizing gravity. That certainly you can go ahead and do so

While it's a simple argument I always liked what one of my quantum mechanics professors said about quantizing gravity. That certainly you can go ahead and do so but in order for it to apply to any of the gravitational interactions we see around us we arrive at energy levels that are smaller than a Planck length. So it could be true. But it's not measurably true.