Every physicist would probably agree with statement.
Einstein did indeed waste many years trying to quantify the gravitational force. Some sort of legacy deal after the photoelectric effect spawned it I guess. The fact is, they are both right.
Einstein could not accept using one set of physical laws when objects were very large or moving near the speed of light and a contradictory set of laws when objects were very small. His search for a unified field theory was not motivated by experimental data. Instead his search had to do with his philosophical assumptions of science. It should be possible to describe the physical universe with one law.
Treating an inherent space-time reaction to matter’s presence with an expansion of physical theories is illogical. Virtual gravitons get grants.
What bothers me in this discussion is when people start using the word "illogical" when its really a matter of disagreement about assumptions. Again assumptions have nothing to do with logic. As for gravitons, I don't know if they exist or not. But if you assume that the basic building blocks of matter are strings, then you will probably conclude that the graviton exists.
As for an expansion of theories, many would say that the presence of relativity and quantum mechanics is an expansion of theories. And the goal is to reconcile these two contradictory theories to just one theory that will describe all physical phenomena, no matter the size or the velocity.
That was one helluva non answer.
What do you think?