I would not be so quick to recommend getting rid of a wrist device. It is completely dependent on a number of factors.
True, if a person has the physical ability to manipulate a release without the use of a wrist device, then that person could learn how to control their release to get more options.
But for some persons (such as myself), a wrist device can be a great asset. I have moderate arthritis which makes it nearly impossible to keep my wrist from breaking back. So the wrist device makes it possible for me to maintain a good position for my wrist and I am able to generate a significant amount of power using it.
There are quite a few PWBA members that use a wrist device and do very well.