Modern cars (whether performance or not) brake faster, handle better, are safer, grip better than your average older car. For all intents and purposes these modern performance cars with loads of power are safer cars than your average everyday car with cheap generic tyres too that you see on the roads.
And whilst yeah the roads haven't changed, they don't need to, tarmac is tarmac, driver education has changed for the worse. The motorway speed limit came into place in 1967, a time when cars needed much longer distances to stop from 70 to 0 in an emergency.
Maybe your annoyances need to be focused on the actual problem, which isn't fast cars, it's the driver and lack of education/awareness on the road and the subsequent mindset of the average driver. Look at any dashcam UK compilation, the vast majority of ridiculous driving and losing control and crashing is done by the average driver in an average car.
