Why are the camber angles of Audi TT, Honda, Toyota, Focus and Citroen designed to be irreconcilable?

The toe-in and inclination angle of the vehicle are to improve the performance of the vehicle in straight line and turning. Generally, the wheel inclines inward, which can make the tire close to the ground, thus improving the cornering performance. Generally, the guide wheels of automobiles are front wheels, and the rear wheels do not need to roll, so they do not need to be adjusted. The rear wheel toe-in can be adjusted or not, and the independent suspension can be adjusted, and vice versa.