The problem with tomorrow is sunk costs. There are many places I wish we had made a difference decision in the past - but we need to balance that with cost to make changes when what we have works okay.
Not always, but very often people in the past had good reason for what they did.
It is a very capable library, and when I first started using it the docs were more Oracle docs looking - but I could find what I wanted easily. Now, it is much more annoying to delve through but looks more modern.
See also: Chesterton's Fence