It makes zero sense to take more time to get rid of the ball. Zero.Correct with a slight caveat. The best have crazy velocity. They can afford to put a little less effort in gaining ground. Each foot of ground gained is equivalent to about one mph.
Some quick math* comparing a 60mph throw to a 65mph throw, and I get a difference of about 0.1 sec for a 90' distance (approx. home-2B). The catcher would have to make up over 5' on the ground, with no time lost in the catch-release, to make up that 0.1 sec. My DD is making up twice that in her knee throws just by being quicker to get rid of the ball. Conclusion: Get that ball out of your hand as quickly as possible.
* My math skills aren't excellent. Maybe @pattar can sort it out if I'm a long way off.