Oracle never really cared about the developer experience. Eventually that wears out whatever market lead a company might have.

Oracle can be very fast and well setup but the tools to work with are not good and the general optimization now is not as needed with cheaper hardware and more horizontal systems.

There are so many other options out there now. PostgreSQL is great to work with and is so good now that it just might be the leader. Oracle was late to embrace usage on cloud instances and licensing models in that environment don't do as well, that is why Microsoft created Azure and it is their new platform essentially.