No, I don't believe that for one second. I have a lot of training and experience in process improvement. I was on a full time process improvement team. In every situation where we were given the authority to actually make changes, we reduced process time by at least 75%.
The problem is that most people hate the word "change" more than they hate their clumsy system or having to wait. Everyone wants the court system to move faster. No one is willing to take on the system to improve it. Further, even when the potential change shows massive savings, in one case $13M, they still don't want to change it.
Our team offered to work free of charge. Our salaries would be solely based on the savings we brought to the organization. We were willing to accept payment of 10% of the actual savings for our pay. They wouldn't let us do that. Even so, at the end of a year, had we been allowed to actually do the salary deal, we would have received a raise so high we could all have retired because we saved so much money. The sad part is we weren't allowed to implement any of it. In the end, it was a waste of time.
I guarantee that I could take that 15-20 year process and cut it down to less than 7 years. I'm 90% sure I could cut it to less than 5 years, but would have to analyze the process first.
One more guarantee; once I made my proposed improvements, 99% of the people involved in the process wouldn't like it at first. If allowed to actually implement it, 80% would eventually see the value and embrace it. The rest will grumble no matter what.