The "meaner" look isn't just about aesthetics, but about physical size, which is increasing. The MacBook analogy seems flawed because the change in the design of the MacBook doesn't actually make it harder for me to avoid killing pedestrians while using it.
All vehicles are getting bigger, for various reasons including safety regulations. A 1985 BMW 3 series had a curb weight of 2,400 to 2,600 pounds. Today a BMW 3 is up to 3,200 to 4,300 pounds. A Tesla model 3, which is in the same class, is up to 3,500 to 4,000 pounds. The top end of both cars actually hits the bottom end of the current F150 range, which is about 4,100 pounds.
> the change in the design of the MacBook doesn't actually make it harder for me to avoid killing pedestrians while using it.
Actually the profile of the current MacBook Airs when closed is less “sharp”, reducing potential velocity and penetration as you swing it around wildly while walking down the street.
