Can anyone criticising the graphics qualify what they mean? I've seen the YouTube vid. It looks both flat and fairly realistic to me, the bits I saw. Real life is pretty flatly shaded a lot of the time. The sparse environments as they whizzed past seemed a little simply shaded, perhaps lacking a GI type solution, but I wouldn't say it was stand-out awful. The 3rd person (vehicle
) view looked arcadey, but I don't think anyone has managed to make the external view look like a camera following a real car yet. Internals lacked any sophistication on the shaders. Given the dynamic lighting though, as I understand it (not following this closely), the simpler lighting style can be explained in contrast to games with static, baked scenery. A little artistic flair in choice of screenshots can probably solve impressions of flatness, unless someone has a better argument as to the actual shortcomings.
Of course, no-one has to present their case. Plenty of people don't like something without being able to put into words why they don't like it, and plenty of people dislike one thing while liking some other remarkably similar thing for similarly unqualifiable reasons. It's always better for a discussion to elucidate on one's POV with more detail than just the assertion of it.