Yes, the road is fine. 4 lanes with a nice median separating them. Problem is when you are staring at your phone, you don’t notice turns. Literally no possible way to screw up this gentle bend, even at 65mph, unless you aren’t looking.
I agree about the adequate infrastructure. However, the problem with 65 at this venue is there is PV north and Blackhorse cross traffic. At 65 there are going to be a lot of injury/fatal collisions at those intersections. Especially on the northbound side as speeds are a bit greater due to the grade.
I think that trees at that area of that two lane road cast shaddows that obscured the curve in the road. Tiger should have seen that curve and slowed down in time. Obviously he was into it so fast he jumped the divider, hit a sign post and propelled across two lanes of oncoming traffic and into the bushes. The momentum was so great that he cut down a tree that caused his vehicle to flip end for end.