Yes and no.
Mays and Robinson's plays were great, but in this exit velocity/launch angle era, we are seeing harder hit balls with less time to react for a defender. This not only comes from better hitter mechanics, but also the increase in pitching velocity, which means more kinetic energy to the pitched ball. If a faster pitched ball gets barreled, it becomes a faster hit ball, simply because that energy cannot be destroyed. That is, unless some hitter goes all Roy Hobbs on that ball and just pounds it into a scattered pile of leather and twine...