A v6 Camry is faster than most muscle cars of the 60's. Maybe that's why it's so nuts out there with this speed in the hands of the general public.
That depends on how you define muscle car. I would never have considered a 14+ second car a muscle car. They all had models in the late 60s that would run low 13s. These were what I considered muscle cars.
Newer cars also handle the speed far better. Nowadays, it's extremely rare that I see quick takeoffs or excessive speed to the degree of causing a problem except where drugs/alcohol are also involved. It's always inattention and inconsideration causing the accidents and unsafe driving.
And you don't really mean speed, pretty much any car or light truck has been capable of 110 mph for over 30 years, unsafe on any public road with any traffic on it. The high horsepower only means the difference between 125 mph top speed and 160+. I've never personally seen anyone on a public road doing over 125, only news broadcasts and youtube. People buy more power for 0-60 and quick passing, not top speed.
I do have to avoid people pulling out or changing lanes without looking or obliviously running red lights etc. daily. This has nothing to do with how fast their car is. They don't need high power to be nuts out there.